diff --git a/.github/workflows/CD.yml b/.github/workflows/api-CD.yml
similarity index 78%
rename from .github/workflows/CD.yml
rename to .github/workflows/api-CD.yml
index 3003dbb8..e845e4cb 100644
--- a/.github/workflows/CD.yml
+++ b/.github/workflows/api-CD.yml
@@ -1,10 +1,15 @@
 # 워크플로우의 이름 지정
-name: Umbba-Server CD
+name: Umbba API Server CD
 
 # 해당 workflow가 언제 실행될 것인지에 대한 트리거를 지정
 on:
   push:
-    branches: [ develop ] # develop branch로 push 될 때 실행됩니다.
+    branches: [ "develop" ]
+    paths:
+      - umbba-api/**
+      - umbba-domain/**
+      - umbba-common/**
+      - umbba-external/**
 
 env:
   S3_BUCKET_NAME: umbba-storage
@@ -37,10 +42,10 @@ jobs:
         aws-region: ap-northeast-2
     
     # 3) 환경변수 파일 생성
-    - name: make application.properties 파일 생성
+    - name: make application.yml 파일 생성
       run: |
         # application.yml 파일 생성
-        cd ./src/main/resources
+        cd ./umbba-notification/src/main/resources
         rm application.yaml
 
         touch ./application.yml
@@ -51,14 +56,14 @@ jobs:
         # 생성된 파일 확인
         cat ./application.yml
         
+        ####################################
+        
         # FCM secret key 폴더 생성 
         mkdir ./firebase
         cd ./firebase
         
         aws s3 cp --region ap-northeast-2 s3://${{ secrets.S3_BUCKET_NAME }}/json/umbba-fcm-firebase-adminsdk.json .
-        
-        cat umbba-fcm-firebase-adminsdk.json
-        
+
       shell: bash
         
     # 이 워크플로우는 gradle build
@@ -66,7 +71,7 @@ jobs:
       run: chmod +x gradlew
       
     - name: Build with Gradle # 실제 application build(-x 옵션을 통해 test는 제외)
-      run: ./gradlew build -x test
+      run: ./gradlew umbba-api:bootJar -x test
       
     # 디렉토리 생성
     - name: Make Directory
@@ -74,19 +79,15 @@ jobs:
       
     # Jar 파일 복사
     - name: Copy Jar
-      run: cp ./build/libs/*.jar ./deploy
+      run: cp ./umbba-api/build/libs/*.jar ./deploy
       # run: cp -r src/main/* ./deploy
     
-    # appspec.yml 파일 복사
-    - name: Copy appspec.yml
-      run: cp appspec.yml ./deploy
-
-    # script files 복사
-    - name: Copy script
-      run: cp ./scripts/*.sh ./deploy
+    # appspec.yml, script files 파일 복사
+    - name: Copy files
+      run: cp ./scripts/umbba-api/* ./deploy
       
     - name: Make zip file
-      run: zip -r ./umbba_server.zip ./deploy
+      run: zip -r ./umbba-api.zip ./deploy
       shell: bash
       
     - name: Configure AWS credentials
@@ -97,7 +98,7 @@ jobs:
         aws-region: ap-northeast-2
         
     - name: Upload to S3
-      run: aws s3 cp --region ap-northeast-2 ./umbba_server.zip s3://$S3_BUCKET_NAME/
+      run: aws s3 cp --region ap-northeast-2 ./umbba-api.zip s3://$S3_BUCKET_NAME/
       
     # Deploy 
     - name: Deploy
@@ -107,7 +108,7 @@ jobs:
       run:
         aws deploy create-deployment 
         --application-name umbba-server-codedeploy
-        --deployment-group-name umbba-server-codedeploy-group
+        --deployment-group-name umbba-api-server-codedeploy-group
         --file-exists-behavior OVERWRITE 
-        --s3-location bucket=umbba-storage,bundleType=zip,key=umbba_server.zip
+        --s3-location bucket=umbba-storage,bundleType=zip,key=umbba-api.zip
         --region ap-northeast-2
diff --git a/.github/workflows/gradle.yml b/.github/workflows/api-CI.yml
similarity index 84%
rename from .github/workflows/gradle.yml
rename to .github/workflows/api-CI.yml
index 55e3ffeb..d8bd96ec 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/api-CI.yml
@@ -11,13 +11,23 @@
 # This workflow will build a Java project with Gradle and cache/restore any dependencies to improve the workflow execution time
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
 
-name: Umbba-Server CI
+name: Umbba API Server CI
 
 on:
   push:
     branches: [ "develop" ]
+    paths:
+      - umbba-api/**
+      - umbba-domain/**
+      - umbba-common/**
+      - umbba-external/**
   pull_request:
     branches: [ "develop" ]
+    paths:
+      - umbba-api/**
+      - umbba-domain/**
+      - umbba-common/**
+      - umbba-external/**
 
 permissions:
   contents: read
@@ -41,10 +51,10 @@ jobs:
         distribution: 'temurin'
     
     # 3) 환경변수 파일 생성
-    - name: make application.properties 파일 생성
+    - name: make application.yml 파일 생성
       run: |
         ## create application.yml
-        cd ./src/main/resources
+        cd ./umbba-api/src/main/resources
         rm application.yaml
 
         # application.yml 파일 생성
@@ -55,6 +65,7 @@ jobs:
         
         # application.yml 파일 확인
         cat ./application.yml
+
       shell: bash
         
     # 이 워크플로우는 gradle build
@@ -62,4 +73,4 @@ jobs:
       run: chmod +x gradlew
       
     - name: Build with Gradle # 실제 application build(-x 옵션을 통해 test는 제외)
-      run: ./gradlew build -x test
+      run: ./gradlew umbba-api:bootJar -x test
diff --git a/.github/workflows/notification-CD.yml b/.github/workflows/notification-CD.yml
new file mode 100644
index 00000000..564ef527
--- /dev/null
+++ b/.github/workflows/notification-CD.yml
@@ -0,0 +1,114 @@
+# 워크플로우의 이름 지정
+name: Umbba Notification Server CD
+
+# 해당 workflow가 언제 실행될 것인지에 대한 트리거를 지정
+on:
+  push:
+    branches: [ "develop" ]
+    paths:
+      - umbba-notification/**
+      - umbba-domain/**
+      - umbba-common/**
+      - umbba-external/**
+
+env:
+  S3_BUCKET_NAME: umbba-storage
+
+jobs:
+  build:
+    name: Code deployment
+
+    # 실행 환경
+    runs-on: ubuntu-latest
+
+    steps:
+
+      # 1) 워크플로우 실행 전 기본적으로 체크아웃 필요
+      - name: checkout
+        uses: actions/checkout@v3
+
+      # 2) JDK 11버전 설치, 다른 JDK 버전을 사용하다면 수정
+      - name: Set up JDK 11
+        uses: actions/setup-java@v3
+        with:
+          java-version: '11'
+          distribution: 'temurin'
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_KEY }}
+          aws-region: ap-northeast-2
+
+      # 3) 환경변수 파일 생성
+      - name: make application.yml 파일 생성
+        run: |
+          # application.yml 파일 생성
+          cd ./umbba-notification/src/main/resources
+          rm application.yaml
+          
+          touch ./application.yml
+          
+          # GitHub-Actions 에서 설정한 값을 application.yml 파일에 쓰기
+          echo "${{ secrets.UMBBA_SECRET }}" >> ./application.yml
+          
+          # 생성된 파일 확인
+          cat ./application.yml
+          
+          ####################################
+          
+          # FCM secret key 폴더 생성 
+          mkdir ./firebase
+          cd ./firebase
+          
+          aws s3 cp --region ap-northeast-2 s3://${{ secrets.S3_BUCKET_NAME }}/json/umbba-fcm-firebase-adminsdk.json .
+
+        shell: bash
+
+      # 이 워크플로우는 gradle build
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build with Gradle # 실제 application build(-x 옵션을 통해 test는 제외)
+        run: ./gradlew umbba-notification:bootJar -x test
+
+      # 디렉토리 생성
+      - name: Make Directory
+        run: mkdir -p deploy
+
+      # Jar 파일 복사
+      - name: Copy Jar
+        run: cp ./umbba-notification/build/libs/*.jar ./deploy
+        # run: cp -r src/main/* ./deploy
+
+      # appspec.yml, script files 파일 복사
+      - name: Copy files
+        run: cp ./scripts/umbba-notification/* ./deploy
+
+      - name: Make zip file
+        run: zip -r ./umbba-notification.zip ./deploy
+        shell: bash
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_KEY }}
+          aws-region: ap-northeast-2
+
+      - name: Upload to S3
+        run: aws s3 cp --region ap-northeast-2 ./umbba-notification.zip s3://$S3_BUCKET_NAME/
+
+      # Deploy
+      - name: Deploy
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_KEY }}
+        run:
+          aws deploy create-deployment
+          --application-name umbba-server-codedeploy
+          --deployment-group-name umbba-notification-server-codedeploy-group
+          --file-exists-behavior OVERWRITE
+          --s3-location bucket=umbba-storage,bundleType=zip,key=umbba-notification.zip
+          --region ap-northeast-2
diff --git a/.github/workflows/notification-CI.yml b/.github/workflows/notification-CI.yml
new file mode 100644
index 00000000..9db9d55d
--- /dev/null
+++ b/.github/workflows/notification-CI.yml
@@ -0,0 +1,76 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+# This workflow will build a Java project with Gradle and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+# This workflow will build a Java project with Gradle and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
+
+name: Umbba Notification Server CI
+
+on:
+  push:
+    branches: [ "develop" ]
+    paths:
+      - umbba-notification/**
+      - umbba-domain/**
+      - umbba-common/**
+      - umbba-external/**
+  pull_request:
+    branches: [ "develop" ]
+    paths:
+      - umbba-notification/**
+      - umbba-domain/**
+      - umbba-common/**
+      - umbba-external/**
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+
+      # 1) 워크플로우 실행 전 기본적으로 체크아웃 필요
+      - name: checkout
+        uses: actions/checkout@v3
+
+      # 2) JDK 11버전 설치, 다른 JDK 버전을 사용하다면 수정
+      - name: Set up JDK 11
+        uses: actions/setup-java@v3
+        with:
+          java-version: '11'
+          distribution: 'temurin'
+
+      # 3) 환경변수 파일 생성
+      - name: make application.yml 파일 생성
+        run: |
+          ## create application.yml
+          cd ./umbba-api/src/main/resources
+          rm application.yaml
+          
+          # application.yml 파일 생성
+          touch ./application.yml
+          
+          # GitHub-Actions 에서 설정한 값을 application.yml 파일에 쓰기
+          echo "${{ secrets.UMBBA_SECRET }}" >> ./application.yml
+          
+          # application.yml 파일 확인
+          cat ./application.yml
+
+        shell: bash
+
+      # 이 워크플로우는 gradle build
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build with Gradle # 실제 application build(-x 옵션을 통해 test는 제외)
+        run: ./gradlew umbba-notification:bootJar -x test
diff --git a/build.gradle b/build.gradle
index fb026a23..0252238c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,76 +1,50 @@
-plugins {
-	id 'java'
-	id 'org.springframework.boot' version '2.7.13'
-	id 'io.spring.dependency-management' version '1.0.15.RELEASE'
-}
-
-group = 'sopt.org'
-version = '0.0.1-SNAPSHOT'
-
-java {
-	sourceCompatibility = '11'
-}
+buildscript {
+	ext {
+		springBootVersion = "2.7.14"
+	}
 
-configurations {
-	compileOnly {
-		extendsFrom annotationProcessor
+	repositories {
+		mavenCentral()
 	}
-}
 
-repositories {
-	mavenCentral()
+	dependencies {
+		classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
+	}
 }
 
-dependencies {
-	implementation 'org.springframework.boot:spring-boot-starter-web'
-	implementation 'org.springframework.boot:spring-boot-starter-validation'
-	testImplementation 'org.projectlombok:lombok:1.18.22'
-	compileOnly 'org.projectlombok:lombok'
-	annotationProcessor 'org.projectlombok:lombok'
-	testAnnotationProcessor 'org.projectlombok:lombok'
-	testImplementation 'org.springframework.boot:spring-boot-starter-test'
-
-	// Health Check
-	implementation 'org.springframework.boot:spring-boot-starter-actuator'
-
-	// JPA & Database
-	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
-	implementation 'mysql:mysql-connector-java:8.0.32'
+subprojects {
+	group = "sopt.org.umbba"
+	version = '0.0.1-SNAPSHOT'
+	apply plugin: "java-library"
+	apply plugin: "org.springframework.boot"
+	apply plugin: "io.spring.dependency-management"
 
-	//JSON
-	implementation 'com.googlecode.json-simple:json-simple:1.1.1'
+	sourceCompatibility = "11"
 
-	// Slack Webhook
-	implementation 'com.slack.api:slack-api-client:1.28.0'
-	implementation 'com.google.code.gson:gson:2.10.1'
-	implementation 'com.squareup.okhttp3:okhttp:4.10.0'
-	implementation 'com.slack.api:slack-app-backend:1.28.0'
-	implementation 'com.slack.api:slack-api-model:1.28.0'
-
-	// JWT
-	implementation group: 'io.jsonwebtoken', name: 'jjwt-api', version: '0.11.2'
-	implementation group: 'io.jsonwebtoken', name: 'jjwt-impl', version: '0.11.2'
-	implementation group: 'io.jsonwebtoken', name: 'jjwt-jackson', version: '0.11.2'
-
-	// Spring Security
-	implementation 'org.springframework.boot:spring-boot-starter-security'
-	implementation 'org.springframework.security:spring-security-test'
-
-	// Redis
-	implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+	repositories {
+		mavenCentral()
+	}
 
-	// Social Login
-	implementation 'org.springframework.cloud:spring-cloud-starter-openfeign:3.1.7'
+	configurations {
+		compileOnly {
+			extendsFrom annotationProcessor
+		}
+	}
 
-	// random String
-	implementation 'org.apache.commons:commons-lang3'
+	dependencies {
+		implementation "org.springframework.boot:spring-boot-starter-validation"
+		testImplementation "org.springframework.boot:spring-boot-starter-test"
 
-	// Firebase
-	implementation 'com.google.firebase:firebase-admin:9.1.1'
+		// lombok
+		compileOnly "org.projectlombok:lombok"
+		annotationProcessor "org.projectlombok:lombok"
 
+		// Health Check
+		implementation 'org.springframework.boot:spring-boot-starter-actuator'
 
-}
+	}
 
-tasks.named('test') {
-	useJUnitPlatform()
-}
+	test {
+		useJUnitPlatform()
+	}
+}
\ No newline at end of file
diff --git a/scripts/deploy.sh b/scripts/deploy.sh
deleted file mode 100644
index 8b22c10e..00000000
--- a/scripts/deploy.sh
+++ /dev/null
@@ -1,85 +0,0 @@
-#!/bin/bash
-BUILD_PATH=$(ls /home/ubuntu/app/umbbaServer-0.0.1-SNAPSHOT.jar)
-JAR_NAME=$(basename $BUILD_PATH)
-echo "> build 파일명: $JAR_NAME"
-
-echo "> build 파일 복사"
-DEPLOY_PATH=/home/ubuntu/app/nonstop/jar/
-cp $BUILD_PATH $DEPLOY_PATH
-
-echo "> 현재 구동중인 Set 확인"
-CURRENT_PROFILE=$(curl -s http://localhost/profile)
-echo "> $CURRENT_PROFILE"
-
-# 쉬고 있는 set 찾기: set1이 사용중이면 set2가 쉬고 있고, 반대면 set1이 쉬고 있음
-if [ $CURRENT_PROFILE == set1 ]
-then
-  IDLE_PROFILE=set2
-  IDLE_PORT=8082
-elif [ $CURRENT_PROFILE == set2 ]
-then
-  IDLE_PROFILE=set1
-  IDLE_PORT=8081
-else
-  echo "> 일치하는 Profile이 없습니다. Profile: $CURRENT_PROFILE"
-  echo "> set1을 할당합니다. IDLE_PROFILE: set1"
-  IDLE_PROFILE=set1
-  IDLE_PORT=8081
-fi
-
-echo "> application.jar 교체"
-IDLE_APPLICATION=$IDLE_PROFILE-Team-Umbba.jar
-IDLE_APPLICATION_PATH=$DEPLOY_PATH$IDLE_APPLICATION
-
-ln -Tfs $DEPLOY_PATH$JAR_NAME $IDLE_APPLICATION_PATH
-
-echo "> $IDLE_PROFILE 에서 구동중인 애플리케이션 pid 확인"
-IDLE_PID=$(pgrep -f $IDLE_APPLICATION)
-
-if [ -z $IDLE_PID ]
-then
-  echo "> 현재 구동중인 애플리케이션이 없으므로 종료하지 않습니다."
-else
-  echo "> kill -15 $IDLE_PID"
-  kill -15 $IDLE_PID
-  echo wait 10 seconds...
-  sleep 10
-  echo wait complete!
-  
-fi
-
-echo "> $IDLE_PROFILE 배포"
-nohup java -jar -Duser.timezone=Asia/Seoul -Dspring.profiles.active=$IDLE_PROFILE $IDLE_APPLICATION_PATH >> /home/ubuntu/app/nohup.out 2>&1 &
-
-echo "> $IDLE_PROFILE 10초 후 Health check 시작"
-echo "> curl -s http://localhost:$IDLE_PORT/health "
-sleep 10
-
-for retry_count in {1..10}
-do
-  response=$(curl -s http://localhost:$IDLE_PORT/actuator/health)
-  up_count=$(echo $response | grep 'UP' | wc -l)
-
-  if [ $up_count -ge 1 ]
-  then # $up_count >= 1 ("UP" 문자열이 있는지 검증)
-      echo "> Health check 성공"
-      break
-  else
-      echo "> Health check의 응답을 알 수 없거나 혹은 status가 UP이 아닙니다."
-      echo "> Health check: ${response}"
-  fi
-
-  if [ $retry_count -eq 10 ]
-  then
-    echo "> Health check 실패. "
-    echo "> Nginx에 연결하지 않고 배포를 종료합니다."
-    exit 1
-  fi
-
-  echo "> Health check 연결 실패. 재시도..."
-  sleep 10
-done
-
-echo "> 스위칭"
-sleep 10
-/home/ubuntu/app/nonstop/switch.sh
diff --git a/scripts/umbba-api/appspec.yml b/scripts/umbba-api/appspec.yml
new file mode 100644
index 00000000..0386a216
--- /dev/null
+++ b/scripts/umbba-api/appspec.yml
@@ -0,0 +1,22 @@
+version: 0.0
+os: linux
+
+files:
+  - source:  /
+    destination: /home/ubuntu/api-server
+    overwrite: yes
+
+permissions:
+  - object: /
+    pattern: "**"
+    owner: ubuntu
+    group: ubuntu
+
+hooks:
+  AfterInstall:
+    - location: deploy.sh
+      timeout: 180
+      runas: ubuntu
+    - location: switch.sh
+      timeout: 180
+      runas: ubuntu
\ No newline at end of file
diff --git a/scripts/umbba-api/deploy.sh b/scripts/umbba-api/deploy.sh
new file mode 100644
index 00000000..b1d1a0ae
--- /dev/null
+++ b/scripts/umbba-api/deploy.sh
@@ -0,0 +1,81 @@
+NOW_TIME="$(date +%Y)-$(date +%m)-$(date +%d) $(date +%H):$(date +%M):$(date +%S)"
+
+BUILD_PATH=$(ls /home/ubuntu/api-server/umbba-api-0.0.1-SNAPSHOT.jar)
+JAR_NAME=$(basename $BUILD_PATH)
+echo "[$NOW_TIME] build 파일명: $JAR_NAME"
+
+echo "[$NOW_TIME] build 파일 복사"
+DEPLOY_PATH=/home/ubuntu/api-server/nonstop/jar/
+cp $BUILD_PATH $DEPLOY_PATH
+
+echo "[$NOW_TIME] 현재 구동중인 Set 확인"
+CURRENT_PROFILE=$(curl -s http://localhost/profile)
+echo "[$NOW_TIME] $CURRENT_PROFILE"
+
+# 쉬고 있는 set 찾기: set1이 사용중이면 set2가 쉬고 있고, 반대면 set1이 쉬고 있음
+if [ $CURRENT_PROFILE == set1 ]
+then
+  IDLE_PROFILE=set2
+  IDLE_PORT=8082
+elif [ $CURRENT_PROFILE == set2 ]
+then
+  IDLE_PROFILE=set1
+  IDLE_PORT=8081
+else
+  echo "[$NOW_TIME] 일치하는 Profile이 없습니다. Profile: $CURRENT_PROFILE"
+  echo "[$NOW_TIME] set1을 할당합니다. IDLE_PROFILE: set1"
+  IDLE_PROFILE=set1
+  IDLE_PORT=8081
+fi
+
+echo "[$NOW_TIME] application.jar 교체"
+IDLE_APPLICATION=$IDLE_PROFILE-Umbba-API.jar
+IDLE_APPLICATION_PATH=$DEPLOY_PATH$IDLE_APPLICATION
+
+ln -Tfs $DEPLOY_PATH$JAR_NAME $IDLE_APPLICATION_PATH
+
+echo "[$NOW_TIME] $IDLE_PROFILE 에서 구동중인 애플리케이션 pid 확인"
+IDLE_PID=$(pgrep -f $IDLE_APPLICATION)
+
+if [ -z $IDLE_PID ]
+then
+  echo "[$NOW_TIME] 현재 구동중인 애플리케이션이 없으므로 종료하지 않습니다."
+else
+  echo "[$NOW_TIME] kill -15 $IDLE_PID"
+  kill -15 $IDLE_PID
+  sleep 10
+fi
+
+echo "[$NOW_TIME] $IDLE_PROFILE 배포"
+nohup java -jar -Duser.timezone=Asia/Seoul -Dspring.profiles.active=$IDLE_PROFILE $IDLE_APPLICATION_PATH >> /home/ubuntu/api-server/deploy.log 2>/home/ubuntu/api-server/deploy_err.log &
+
+##################################################################
+
+echo "[$NOW_TIME] $IDLE_PROFILE 10초 후 Health check 시작"
+echo "[$NOW_TIME] curl -s http://localhost:$IDLE_PORT/health "
+sleep 10
+
+for retry_count in {1..10}
+do
+  response=$(curl -s http://localhost:$IDLE_PORT/actuator/health)
+  up_count=$(echo $response | grep 'UP' | wc -l)
+
+  if [ $up_count -ge 1 ]
+  then # $up_count >= 1 ("UP" 문자열이 있는지 검증)
+      echo "[$NOW_TIME] Health check 성공"
+      break
+  else
+      echo "[$NOW_TIME] Health check의 응답을 알 수 없거나 혹은 status가 UP이 아닙니다."
+      echo "[$NOW_TIME] Health check: ${response}"
+  fi
+
+  if [ $retry_count -eq 10 ]
+  then
+    echo "[$NOW_TIME] Health check 실패. "
+    echo "[$NOW_TIME] Nginx에 연결하지 않고 배포를 종료합니다."
+    exit 1
+  fi
+
+  echo "[$NOW_TIME] Health check 연결 실패. 재시도..."
+  sleep 10
+done
\ No newline at end of file
diff --git a/scripts/umbba-api/switch.sh b/scripts/umbba-api/switch.sh
new file mode 100644
index 00000000..31150cdd
--- /dev/null
+++ b/scripts/umbba-api/switch.sh
@@ -0,0 +1,30 @@
+NOW_TIME="$(date +%Y)-$(date +%m)-$(date +%d) $(date +%H):$(date +%M):$(date +%S)"
+
+echo "[$NOW_TIME] 스위칭"
+sleep 10
+#!/bin/bash
+echo "[$NOW_TIME] 현재 구동중인 Port 확인"
+CURRENT_PROFILE=$(curl -s http://localhost/profile)
+
+# 쉬고 있는 set 찾기: set1이 사용중이면 set2가 쉬고 있고, 반대면 set1이 쉬고 있음
+if [ $CURRENT_PROFILE == set1 ]
+then
+  IDLE_PORT=8082
+elif [ $CURRENT_PROFILE == set2 ]
+then
+  IDLE_PORT=8081
+else
+  echo "[$NOW_TIME] 일치하는 Profile이 없습니다. Profile: $CURRENT_PROFILE"
+  echo "[$NOW_TIME] 8081을 할당합니다."
+  IDLE_PORT=8081
+fi
+
+echo "[$NOW_TIME] 전환할 Port: $IDLE_PORT"
+echo "[$NOW_TIME] Port 전환"
+echo "[$NOW_TIME] set \$service_url http://127.0.0.1:${IDLE_PORT};" | sudo tee /etc/nginx/conf.d/service-url.inc
+
+PROXY_PORT=$(curl -s http://localhost/profile)
+echo "[$NOW_TIME] Nginx Current Proxy Port: $PROXY_PORT"
+
+echo "[$NOW_TIME] Nginx Reload"
+sudo service nginx reload
\ No newline at end of file
diff --git a/appspec.yml b/scripts/umbba-notification/appspec.yml
similarity index 69%
rename from appspec.yml
rename to scripts/umbba-notification/appspec.yml
index 44c46f6a..4a0bf554 100644
--- a/appspec.yml
+++ b/scripts/umbba-notification/appspec.yml
@@ -3,7 +3,7 @@ os: linux
 
 files:
   - source:  /
-    destination: /home/ubuntu/app
+    destination: /home/ubuntu/notification-server
     overwrite: yes
 
 permissions:
@@ -15,5 +15,5 @@ permissions:
 hooks:
   AfterInstall:
     - location: deploy.sh
-      timeout: 60
-      runas: ubuntu
+      timeout: 180
+      runas: ubuntu
\ No newline at end of file
diff --git a/scripts/umbba-notification/deploy.sh b/scripts/umbba-notification/deploy.sh
new file mode 100644
index 00000000..0c27634a
--- /dev/null
+++ b/scripts/umbba-notification/deploy.sh
@@ -0,0 +1,14 @@
+NOW_TIME="$(date +%Y)-$(date +%m)-$(date +%d) $(date +%H):$(date +%M):$(date +%S)"
+
+BUILD_PATH=/home/ubuntu/notification-server/umbba-notification-0.0.1-SNAPSHOT.jar
+TARGET_PORT=8083
+TARGET_PID=$(lsof -Fp -i TCP:${TARGET_PORT} | grep -Po 'p[0-9]+' | grep -Po '[0-9]+')
+
+if [ ! -z ${TARGET_PID} ]; then
+  echo "[$NOW_TIME] Kill WAS running at ${TARGET_PORT}." >> /home/ubuntu/notification-server/deploy.log
+  sudo kill -15 ${TARGET_PID}
+fi
+
+nohup java -jar -Duser.timezone=Asia/Seoul -Dspring.profiles.active=notification $BUILD_PATH >> /home/ubuntu/notification-server/deploy.log 2>/home/ubuntu/notification-server/deploy_err.log &
+echo "[$NOW_TIME] Now new WAS runs at ${TARGET_PORT}." >> /home/ubuntu/notification-server/deploy.log
+exit 0
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
index 05a1b1b2..12ede70b 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1 +1,8 @@
 rootProject.name = 'umbbaServer'
+
+include 'umbba-common'
+include 'umbba-domain'
+include 'umbba-external'
+include 'umbba-api'
+include 'umbba-notification'
+
diff --git a/src/main/java/sopt/org/umbbaServer/UmbbaServerApplication.java b/src/main/java/sopt/org/umbbaServer/UmbbaServerApplication.java
deleted file mode 100644
index 57184e14..00000000
--- a/src/main/java/sopt/org/umbbaServer/UmbbaServerApplication.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package sopt.org.umbbaServer;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.boot.autoconfigure.security.servlet.UserDetailsServiceAutoConfiguration;
-import org.springframework.cloud.openfeign.EnableFeignClients;
-import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
-import org.springframework.scheduling.annotation.EnableScheduling;
-
-@EnableJpaAuditing
-@EnableScheduling
-@SpringBootApplication(exclude = { UserDetailsServiceAutoConfiguration.class })
-@EnableFeignClients
-public class UmbbaServerApplication {
-
-	public static void main(String[] args) {
-
-		SpringApplication.run(UmbbaServerApplication.class, args);
-
-	}
-
-}
diff --git a/src/test/java/sopt/org/umbbaServer/UmbbaServerApplicationTests.java b/src/test/java/sopt/org/umbbaServer/UmbbaServerApplicationTests.java
deleted file mode 100644
index 580f0f43..00000000
--- a/src/test/java/sopt/org/umbbaServer/UmbbaServerApplicationTests.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package sopt.org.umbbaServer;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-class UmbbaServerApplicationTests {
-
-	@Test
-	void contextLoads() {
-	}
-
-}
diff --git a/umbba-api/build.gradle b/umbba-api/build.gradle
new file mode 100644
index 00000000..fe36cb1d
--- /dev/null
+++ b/umbba-api/build.gradle
@@ -0,0 +1,39 @@
+jar { enabled = false }
+
+dependencies {
+    implementation project(':umbba-common')
+    implementation project(':umbba-domain')
+    implementation project(':umbba-external')
+
+    // spring mvc
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+
+    // swagger
+//	implementation 'org.springdoc:springdoc-openapi-ui:1.5.4'
+
+    // SQS
+    implementation "org.springframework.cloud:spring-cloud-aws-messaging:2.2.6.RELEASE"
+
+    // Spring Security
+    implementation 'org.springframework.boot:spring-boot-starter-security'
+    implementation 'org.springframework.security:spring-security-test'
+
+    // jwt
+    implementation group: "io.jsonwebtoken", name: "jjwt-api", version: "0.11.2"
+    implementation group: "io.jsonwebtoken", name: "jjwt-impl", version: "0.11.2"
+    implementation group: "io.jsonwebtoken", name: "jjwt-jackson", version: "0.11.2"
+
+    // random String
+    implementation 'org.apache.commons:commons-lang3'
+
+    // for FeignException
+    implementation 'org.springframework.cloud:spring-cloud-starter-openfeign:3.1.7'
+
+    // redis
+    implementation "org.springframework.boot:spring-boot-starter-data-redis"
+    implementation "org.springframework.session:spring-session-data-redis"
+
+    // s3
+//    implementation "org.springframework.cloud:spring-cloud-starter-aws:2.2.6.RELEASE"
+}
+
diff --git a/umbba-api/src/main/java/sopt/org/umbba/api/ApiApplication.java b/umbba-api/src/main/java/sopt/org/umbba/api/ApiApplication.java
new file mode 100644
index 00000000..97943392
--- /dev/null
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/ApiApplication.java
@@ -0,0 +1,25 @@
+package sopt.org.umbba.api;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import org.springframework.boot.autoconfigure.security.servlet.UserDetailsServiceAutoConfiguration;
+import org.springframework.cloud.openfeign.EnableFeignClients;
+import sopt.org.umbba.common.UmbbaCommonRoot;
+import sopt.org.umbba.domain.UmbbaDomainRoot;
+import sopt.org.umbba.external.UmbbaExternalRoot;
+
+@SpringBootApplication(scanBasePackageClasses = {
+        UmbbaCommonRoot.class,
+        UmbbaDomainRoot.class,
+        UmbbaExternalRoot.class,
+        ApiApplication.class
+}, exclude = { UserDetailsServiceAutoConfiguration.class })
+@EnableFeignClients(basePackageClasses = UmbbaExternalRoot.class)
+public class ApiApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ApiApplication.class, args);
+    }
+
+}
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/SecurityConfig.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/SecurityConfig.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/global/config/SecurityConfig.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/SecurityConfig.java
index 8e32578f..76254bd2 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/SecurityConfig.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/SecurityConfig.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.config;
+package sopt.org.umbba.api.config;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Bean;
@@ -8,8 +8,8 @@
 import org.springframework.security.config.http.SessionCreationPolicy;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
-import sopt.org.umbbaServer.global.config.auth.CustomJwtAuthenticationEntryPoint;
-import sopt.org.umbbaServer.global.config.auth.JwtAuthenticationFilter;
+import sopt.org.umbba.api.config.auth.CustomJwtAuthenticationEntryPoint;
+import sopt.org.umbba.api.config.auth.JwtAuthenticationFilter;
 
 @Configuration
 @EnableWebSecurity
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/auth/CustomJwtAuthenticationEntryPoint.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/auth/CustomJwtAuthenticationEntryPoint.java
similarity index 87%
rename from src/main/java/sopt/org/umbbaServer/global/config/auth/CustomJwtAuthenticationEntryPoint.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/auth/CustomJwtAuthenticationEntryPoint.java
index 530f1dce..39a23c4c 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/auth/CustomJwtAuthenticationEntryPoint.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/auth/CustomJwtAuthenticationEntryPoint.java
@@ -1,12 +1,12 @@
-package sopt.org.umbbaServer.global.config.auth;
+package sopt.org.umbba.api.config.auth;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.springframework.http.MediaType;
 import org.springframework.security.core.AuthenticationException;
 import org.springframework.security.web.AuthenticationEntryPoint;
 import org.springframework.stereotype.Component;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/auth/JwtAuthenticationFilter.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/auth/JwtAuthenticationFilter.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/global/config/auth/JwtAuthenticationFilter.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/auth/JwtAuthenticationFilter.java
index 4c77d09b..99951680 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/auth/JwtAuthenticationFilter.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/auth/JwtAuthenticationFilter.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.config.auth;
+package sopt.org.umbba.api.config.auth;
 
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
@@ -8,8 +8,8 @@
 import org.springframework.stereotype.Component;
 import org.springframework.util.StringUtils;
 import org.springframework.web.filter.OncePerRequestFilter;
-import sopt.org.umbbaServer.global.config.jwt.JwtValidationType;
-import sopt.org.umbbaServer.global.config.jwt.JwtProvider;
+import sopt.org.umbba.api.config.jwt.JwtProvider;
+import sopt.org.umbba.api.config.jwt.JwtValidationType;
 
 import javax.servlet.FilterChain;
 import javax.servlet.ServletException;
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/auth/UserAuthentication.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/auth/UserAuthentication.java
similarity index 89%
rename from src/main/java/sopt/org/umbbaServer/global/config/auth/UserAuthentication.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/auth/UserAuthentication.java
index 75ba55d6..f0f7083c 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/auth/UserAuthentication.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/auth/UserAuthentication.java
@@ -1,5 +1,4 @@
-package sopt.org.umbbaServer.global.config.auth;
-
+package sopt.org.umbba.api.config.auth;
 
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.GrantedAuthority;
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/jwt/JwtProvider.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/JwtProvider.java
similarity index 94%
rename from src/main/java/sopt/org/umbbaServer/global/config/jwt/JwtProvider.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/JwtProvider.java
index ea2dac14..77482664 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/jwt/JwtProvider.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/JwtProvider.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.config.jwt;
+package sopt.org.umbba.api.config.jwt;
 
 
 import io.jsonwebtoken.*;
@@ -8,10 +8,9 @@
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.security.core.Authentication;
 import org.springframework.stereotype.Component;
-import sopt.org.umbbaServer.global.config.jwt.redis.RefreshToken;
-import sopt.org.umbbaServer.global.config.jwt.redis.TokenRepository;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.domain.domain.redis.RefreshToken;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
 
 import javax.annotation.PostConstruct;
 import javax.crypto.SecretKey;
@@ -19,7 +18,6 @@
 import java.security.Principal;
 import java.util.Base64;
 import java.util.Date;
-import java.util.UUID;
 
 import static java.util.Objects.isNull;
 
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/jwt/JwtValidationType.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/JwtValidationType.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/global/config/jwt/JwtValidationType.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/JwtValidationType.java
index 54c5d739..dd7cc444 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/jwt/JwtValidationType.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/JwtValidationType.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.config.jwt;
+package sopt.org.umbba.api.config.jwt;
 
 import lombok.AccessLevel;
 import lombok.Getter;
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/jwt/TokenDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/TokenDto.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/global/config/jwt/TokenDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/TokenDto.java
index e41cadd3..4c456b26 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/jwt/TokenDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/TokenDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.config.jwt;
+package sopt.org.umbba.api.config.jwt;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/jwt/redis/TokenRepository.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/TokenRepository.java
similarity index 64%
rename from src/main/java/sopt/org/umbbaServer/global/config/jwt/redis/TokenRepository.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/TokenRepository.java
index c37664f0..4de694a1 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/jwt/redis/TokenRepository.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/jwt/TokenRepository.java
@@ -1,6 +1,7 @@
-package sopt.org.umbbaServer.global.config.jwt.redis;
+package sopt.org.umbba.api.config.jwt;
 
 import org.springframework.data.repository.CrudRepository;
+import sopt.org.umbba.domain.domain.redis.RefreshToken;
 
 //Redis에 저장해주는 역할
 public interface TokenRepository extends CrudRepository<RefreshToken, Long> {
diff --git a/umbba-api/src/main/java/sopt/org/umbba/api/config/sqs/SqsConfig.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/sqs/SqsConfig.java
new file mode 100644
index 00000000..adc5d50a
--- /dev/null
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/sqs/SqsConfig.java
@@ -0,0 +1,33 @@
+package sopt.org.umbba.api.config.sqs;
+
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.services.sqs.AmazonSQSAsync;
+import com.amazonaws.services.sqs.AmazonSQSAsyncClientBuilder;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+@Configuration
+public class SqsConfig {
+
+    @Value("${cloud.aws.credentials.accessKey}")
+    private String AWS_ACCESS_KEY;
+
+    @Value("${cloud.aws.credentials.secretKey}")
+    private String AWS_SECRET_KEY;
+
+    @Value("${cloud.aws.region.static}")
+    private String AWS_REGION;
+
+    @Primary
+    @Bean
+    public AmazonSQSAsync amazonSQSAsync() {
+        BasicAWSCredentials basicAWSCredentials = new BasicAWSCredentials(AWS_ACCESS_KEY, AWS_SECRET_KEY);
+        return AmazonSQSAsyncClientBuilder.standard()
+                .withRegion(AWS_REGION)
+                .withCredentials(new AWSStaticCredentialsProvider(basicAWSCredentials))
+                .build();
+    }
+}
diff --git a/umbba-api/src/main/java/sopt/org/umbba/api/config/sqs/producer/SqsProducer.java b/umbba-api/src/main/java/sopt/org/umbba/api/config/sqs/producer/SqsProducer.java
new file mode 100644
index 00000000..5c8b42df
--- /dev/null
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/config/sqs/producer/SqsProducer.java
@@ -0,0 +1,80 @@
+package sopt.org.umbba.api.config.sqs.producer;
+
+import com.amazonaws.services.sqs.AmazonSQS;
+import com.amazonaws.services.sqs.model.MessageAttributeValue;
+import com.amazonaws.services.sqs.model.SendMessageRequest;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import sopt.org.umbba.common.sqs.MessageType;
+import sopt.org.umbba.common.sqs.MessageUtils;
+import sopt.org.umbba.common.sqs.dto.MessageDto;
+
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * 큐에 메시지를 보내는 역할:  API 서버에서 이벤트가 발생할 떄 푸시알림 전송
+ * -> 처음 SQS 대기열 생성에서 설정해둔 사항이 여기서 적용 (지연시간, 메시지 수신 대기 등)
+ *
+ * 1. 처리할 작업 메시지를 SQS에 등록
+ * 2. 큐에서 메시지를 소비(consume)하는 것을 실패한 경우, DLQ로 전송
+ *
+ * TODO 기존에 푸시알림을 파이어베이스로 보내기 위해 호출했던 함수를 SQS Producer로 대체
+ */
+@Slf4j
+@Component
+public class SqsProducer {
+
+    @Value("${cloud.aws.sqs.notification.url}")
+    private String NOTIFICATION_URL;
+
+    private static final String GROUP_ID = "sqs";
+    private final ObjectMapper objectMapper;
+    private final AmazonSQS amazonSqs;
+    private static final String SQS_QUEUE_REQUEST_LOG_MESSAGE = "====> [SQS Queue Request] : %s ";
+
+    public SqsProducer(ObjectMapper objectMapper, AmazonSQS amazonSqs) {
+        this.objectMapper = objectMapper;
+        this.amazonSqs = amazonSqs;
+    }
+
+
+    public void produce(MessageDto message) {
+        try {
+            SendMessageRequest request = new SendMessageRequest(NOTIFICATION_URL,
+                    objectMapper.writeValueAsString(message))
+//                    .withMessageGroupId(GROUP_ID)
+//                    .withMessageDeduplicationId(UUID.randomUUID().toString())  // TODO UUID Random String으로 변경
+                    .withMessageAttributes(createMessageAttributes(message.getType()));
+
+            amazonSqs.sendMessage(request);
+            log.info(MessageUtils.generate(SQS_QUEUE_REQUEST_LOG_MESSAGE, request));
+
+        } catch (JsonProcessingException e) {
+            log.error(e.getMessage(), e);
+        }
+    }
+
+    private Map<String, MessageAttributeValue> createMessageAttributes(String type) {
+
+        return Map.of(MessageType.MESSAGE_TYPE_HEADER, new MessageAttributeValue()
+                .withDataType("String")
+                .withStringValue(type));
+    }
+
+
+    /*  Queue에 단일 메시지를 보내는 함수 -> SQS 실습에서 사용한 함수
+    public SendResult<String> sendMessage(String groupId, String message) {
+//        Message<String> newMessage = MessageBuilder.withPayload(message).build();
+        System.out.println("Sender: " + message);
+        return queueMessagingTemplate.send(to -> to
+                .queue(QUEUE_NAME)
+                .messageGroupId(groupId)
+                .messageDeduplicationId(groupId)
+                .payload(message));
+    }
+     */
+}
\ No newline at end of file
diff --git a/src/main/java/sopt/org/umbbaServer/global/common/advice/ControllerExceptionAdvice.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/advice/ControllerExceptionAdvice.java
similarity index 95%
rename from src/main/java/sopt/org/umbbaServer/global/common/advice/ControllerExceptionAdvice.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/advice/ControllerExceptionAdvice.java
index 84052527..3d2e05ee 100644
--- a/src/main/java/sopt/org/umbbaServer/global/common/advice/ControllerExceptionAdvice.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/advice/ControllerExceptionAdvice.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.common.advice;
+package sopt.org.umbba.api.controller.advice;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -20,10 +20,9 @@
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
 import org.springframework.web.util.NestedServletException;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
-import sopt.org.umbbaServer.global.util.slack.SlackApi;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
+import sopt.org.umbba.common.exception.model.CustomException;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.validation.UnexpectedTypeException;
@@ -38,7 +37,7 @@
 @RequiredArgsConstructor
 public class ControllerExceptionAdvice {
 
-    private final SlackApi slackApi;
+//    private final SlackApi slackApi;
 
     /**
      * 400 BAD_REQUEST
@@ -93,15 +92,13 @@ protected ApiResponse<Object> handlerHttpRequestMethodNotSupportedException(fina
     }
 
 
-
-
     /**
      * 500 INTERNEL_SERVER  // TODO 서비스 단에서 예외가 꼼꼼하게 처리된 상태에서 500 에러를 가장 마지막에 던지도록 처리
      */
     @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
     @ExceptionHandler(Exception.class)
     protected ApiResponse<Exception> handleException(final Exception e, final HttpServletRequest request) throws IOException {
-        slackApi.sendAlert(e, request);
+//        slackApi.sendAlert(e, request); TODO ⭐️이 지점에서 SQS에 넣어야함
 
         log.error("Unexpected exception occurred: {}", e.getMessage(), e);
 
@@ -181,8 +178,6 @@ public ApiResponse<Exception> handlerNullPointerException(final NullPointerExcep
         return ApiResponse.error(ErrorType.NULL_POINTER_ERROR, e);
     }
 
-
-
     /**
      * CUSTOM_ERROR
      */
diff --git a/src/main/java/sopt/org/umbbaServer/global/common/DemoController.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/health/DemoController.java
similarity index 64%
rename from src/main/java/sopt/org/umbbaServer/global/common/DemoController.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/health/DemoController.java
index ffebea2a..c278c058 100644
--- a/src/main/java/sopt/org/umbbaServer/global/common/DemoController.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/health/DemoController.java
@@ -1,17 +1,21 @@
-package sopt.org.umbbaServer.global.common;
+package sopt.org.umbba.api.controller.health;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
-import sopt.org.umbbaServer.domain.qna.service.QnAService;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
-import sopt.org.umbbaServer.global.exception.SuccessType;
+import sopt.org.umbba.api.config.sqs.producer.SqsProducer;
+import sopt.org.umbba.api.service.notification.NotificationService;
+import sopt.org.umbba.api.service.qna.QnAService;
+import sopt.org.umbba.common.exception.SuccessType;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
+import sopt.org.umbba.common.sqs.dto.FCMPushRequestDto;
 
 @RestController
 @RequiredArgsConstructor
 public class DemoController {
 
     private final QnAService qnAService;
+    private final NotificationService notificationService;
 
     /**
      * 데모데이 테스트용 QnA리스트 세팅 API
@@ -44,4 +48,12 @@ public ApiResponse demoQnA(@PathVariable final Long userId) {
         return ApiResponse.success(SuccessType.TEST_SUCCESS);
     }
 
+    @PatchMapping("/demo/qna/alarm/{userId}")
+    @ResponseStatus(HttpStatus.OK)
+    public ApiResponse qnaAnswerAlarm(@PathVariable final Long userId, @RequestBody String question) {
+
+        notificationService.pushOpponentReply(question, userId);
+        return ApiResponse.success(SuccessType.TEST_SUCCESS);
+    }
+
 }
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/ServerProfileController.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/health/ServerProfileController.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/global/util/ServerProfileController.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/health/ServerProfileController.java
index bfbd1f77..b0f7dc9f 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/ServerProfileController.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/health/ServerProfileController.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.util;
+package sopt.org.umbba.api.controller.health;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.core.env.Environment;
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/slack/SlackTestController.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/health/SlackTestController.java
similarity index 84%
rename from src/main/java/sopt/org/umbbaServer/global/util/slack/SlackTestController.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/health/SlackTestController.java
index ffdb2507..516dc45b 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/slack/SlackTestController.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/health/SlackTestController.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.util.slack;
+package sopt.org.umbba.api.controller.health;
 
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
@@ -6,7 +6,7 @@
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestController;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
 
 @Slf4j
 @RestController
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/ParentchildController.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/ParentchildController.java
similarity index 66%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/ParentchildController.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/ParentchildController.java
index 58e6e3d9..593963d9 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/ParentchildController.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/ParentchildController.java
@@ -1,20 +1,21 @@
-package sopt.org.umbbaServer.domain.parentchild.controller;
+package sopt.org.umbba.api.controller.parentchild;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.request.InviteCodeRequestDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.request.OnboardingInviteRequestDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.request.OnboardingReceiveRequestDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.response.InviteResultResponseDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.response.OnboardingInviteResponseDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.response.OnboardingReceiveResponseDto;
-import sopt.org.umbbaServer.domain.parentchild.service.ParentchildService;
-import sopt.org.umbbaServer.domain.qna.service.QnAService;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
-import sopt.org.umbbaServer.global.config.jwt.JwtProvider;
-import sopt.org.umbbaServer.global.exception.SuccessType;
+import sopt.org.umbba.api.config.jwt.JwtProvider;
+import sopt.org.umbba.api.controller.parentchild.dto.request.InviteCodeRequestDto;
+import sopt.org.umbba.api.controller.parentchild.dto.request.OnboardingInviteRequestDto;
+import sopt.org.umbba.api.controller.parentchild.dto.request.OnboardingReceiveRequestDto;
+import sopt.org.umbba.api.controller.parentchild.dto.response.InviteResultResponseDto;
+import sopt.org.umbba.api.controller.parentchild.dto.response.OnboardingInviteResponseDto;
+import sopt.org.umbba.api.controller.parentchild.dto.response.OnboardingReceiveResponseDto;
+import sopt.org.umbba.api.service.parentchild.ParentchildService;
+import sopt.org.umbba.api.service.qna.QnAService;
+import sopt.org.umbba.common.exception.SuccessType;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
+
 
 import javax.validation.Valid;
 import java.security.Principal;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/InviteCodeRequestDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/InviteCodeRequestDto.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/InviteCodeRequestDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/InviteCodeRequestDto.java
index 485786f7..826589af 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/InviteCodeRequestDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/InviteCodeRequestDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.parentchild.controller.dto.request;
+package sopt.org.umbba.api.controller.parentchild.dto.request;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/OnboardingInviteRequestDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/OnboardingInviteRequestDto.java
similarity index 87%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/OnboardingInviteRequestDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/OnboardingInviteRequestDto.java
index 243bcb8c..82d8ff3e 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/OnboardingInviteRequestDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/OnboardingInviteRequestDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.parentchild.controller.dto.request;
+package sopt.org.umbba.api.controller.parentchild.dto.request;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
@@ -8,7 +8,7 @@
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.UserInfoDto;
+import sopt.org.umbba.api.controller.user.dto.request.UserInfoDto;
 
 import javax.validation.Valid;
 import javax.validation.constraints.NotEmpty;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/OnboardingReceiveRequestDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/OnboardingReceiveRequestDto.java
similarity index 81%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/OnboardingReceiveRequestDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/OnboardingReceiveRequestDto.java
index 15f99d24..7eb6d0fa 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/request/OnboardingReceiveRequestDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/request/OnboardingReceiveRequestDto.java
@@ -1,11 +1,11 @@
-package sopt.org.umbbaServer.domain.parentchild.controller.dto.request;
+package sopt.org.umbba.api.controller.parentchild.dto.request;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.UserInfoDto;
+import sopt.org.umbba.api.controller.user.dto.request.UserInfoDto;
 
 import javax.validation.Valid;
 import javax.validation.constraints.NotEmpty;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/InviteResultResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/InviteResultResponseDto.java
similarity index 82%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/InviteResultResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/InviteResultResponseDto.java
index 5007d36e..60b5cbf2 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/InviteResultResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/InviteResultResponseDto.java
@@ -1,14 +1,13 @@
-package sopt.org.umbbaServer.domain.parentchild.controller.dto.response;
+package sopt.org.umbba.api.controller.parentchild.dto.response;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.UserInfoDto;
-import sopt.org.umbbaServer.domain.user.model.User;
+import sopt.org.umbba.api.controller.user.dto.request.UserInfoDto;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.user.User;
 
 import java.util.List;
 import java.util.stream.Collectors;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/OnboardingInviteResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/OnboardingInviteResponseDto.java
similarity index 79%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/OnboardingInviteResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/OnboardingInviteResponseDto.java
index c8fa6b37..bce5d63f 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/OnboardingInviteResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/OnboardingInviteResponseDto.java
@@ -1,13 +1,13 @@
-package sopt.org.umbbaServer.domain.parentchild.controller.dto.response;
+package sopt.org.umbba.api.controller.parentchild.dto.response;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.UserInfoDto;
-import sopt.org.umbbaServer.domain.user.model.User;
+import sopt.org.umbba.api.controller.user.dto.request.UserInfoDto;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.user.User;
 
 import java.time.LocalTime;
 
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/OnboardingReceiveResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/OnboardingReceiveResponseDto.java
similarity index 78%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/OnboardingReceiveResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/OnboardingReceiveResponseDto.java
index 91c52cf2..141192ab 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/controller/dto/response/OnboardingReceiveResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/parentchild/dto/response/OnboardingReceiveResponseDto.java
@@ -1,13 +1,13 @@
-package sopt.org.umbbaServer.domain.parentchild.controller.dto.response;
+package sopt.org.umbba.api.controller.parentchild.dto.response;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.UserInfoDto;
-import sopt.org.umbbaServer.domain.user.model.User;
+import sopt.org.umbba.api.controller.user.dto.request.UserInfoDto;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.user.User;
 
 import java.time.LocalTime;
 import java.util.List;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/QnAController.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/QnAController.java
similarity index 84%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/controller/QnAController.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/QnAController.java
index c201a206..37c910ec 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/QnAController.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/QnAController.java
@@ -1,14 +1,14 @@
-package sopt.org.umbbaServer.domain.qna.controller;
+package sopt.org.umbba.api.controller.qna;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
-import sopt.org.umbbaServer.domain.qna.controller.dto.request.TodayAnswerRequestDto;
-import sopt.org.umbbaServer.domain.qna.controller.dto.response.*;
-import sopt.org.umbbaServer.domain.qna.service.QnAService;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
-import sopt.org.umbbaServer.global.config.jwt.JwtProvider;
-import sopt.org.umbbaServer.global.exception.SuccessType;
+import sopt.org.umbba.api.config.jwt.JwtProvider;
+import sopt.org.umbba.api.controller.qna.dto.request.TodayAnswerRequestDto;
+import sopt.org.umbba.api.controller.qna.dto.response.*;
+import sopt.org.umbba.api.service.qna.QnAService;
+import sopt.org.umbba.common.exception.SuccessType;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
 
 import javax.validation.Valid;
 import java.security.Principal;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/request/TodayAnswerRequestDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/request/TodayAnswerRequestDto.java
similarity index 90%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/request/TodayAnswerRequestDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/request/TodayAnswerRequestDto.java
index f988ca22..36eecdf2 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/request/TodayAnswerRequestDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/request/TodayAnswerRequestDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.qna.controller.dto.request;
+package sopt.org.umbba.api.controller.qna.dto.request;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/GetInvitationResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/GetInvitationResponseDto.java
similarity index 96%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/GetInvitationResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/GetInvitationResponseDto.java
index 7677d6ee..5c61e0da 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/GetInvitationResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/GetInvitationResponseDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.qna.controller.dto.response;
+package sopt.org.umbba.api.controller.qna.dto.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/GetMainViewResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/GetMainViewResponseDto.java
similarity index 85%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/GetMainViewResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/GetMainViewResponseDto.java
index 858a09ec..bf00508a 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/GetMainViewResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/GetMainViewResponseDto.java
@@ -1,10 +1,10 @@
-package sopt.org.umbbaServer.domain.qna.controller.dto.response;
+package sopt.org.umbba.api.controller.qna.dto.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.qna.model.QnA;
+import sopt.org.umbba.domain.domain.qna.QnA;
 
 @Getter
 @Builder
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/QnAListResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/QnAListResponseDto.java
similarity index 84%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/QnAListResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/QnAListResponseDto.java
index a5d65dd8..50931530 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/QnAListResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/QnAListResponseDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.qna.controller.dto.response;
+package sopt.org.umbba.api.controller.qna.dto.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/SingleQnAResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/SingleQnAResponseDto.java
similarity index 89%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/SingleQnAResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/SingleQnAResponseDto.java
index 6e17205b..55372ff7 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/SingleQnAResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/SingleQnAResponseDto.java
@@ -1,12 +1,12 @@
-package sopt.org.umbbaServer.domain.qna.controller.dto.response;
+package sopt.org.umbba.api.controller.qna.dto.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.qna.model.QnA;
-import sopt.org.umbbaServer.domain.qna.model.Question;
-import sopt.org.umbbaServer.domain.user.model.User;
+import sopt.org.umbba.domain.domain.qna.QnA;
+import sopt.org.umbba.domain.domain.qna.Question;
+import sopt.org.umbba.domain.domain.user.User;
 
 @Getter
 @Builder
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/TodayQnAResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/TodayQnAResponseDto.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/TodayQnAResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/TodayQnAResponseDto.java
index be1d374b..998d555b 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/controller/dto/response/TodayQnAResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/qna/dto/response/TodayQnAResponseDto.java
@@ -1,12 +1,12 @@
-package sopt.org.umbbaServer.domain.qna.controller.dto.response;
+package sopt.org.umbba.api.controller.qna.dto.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.qna.model.QnA;
-import sopt.org.umbbaServer.domain.qna.model.Question;
-import sopt.org.umbbaServer.domain.user.model.User;
+import sopt.org.umbba.domain.domain.qna.QnA;
+import sopt.org.umbba.domain.domain.qna.Question;
+import sopt.org.umbba.domain.domain.user.User;
 
 @Getter
 @Builder
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/controller/AuthController.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/AuthController.java
similarity index 76%
rename from src/main/java/sopt/org/umbbaServer/domain/user/controller/AuthController.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/user/AuthController.java
index eb1110e8..2c9407fa 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/controller/AuthController.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/AuthController.java
@@ -1,17 +1,17 @@
-package sopt.org.umbbaServer.domain.user.controller;
+package sopt.org.umbba.api.controller.user;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.RefreshRequestDto;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.SocialLoginRequestDto;
-import sopt.org.umbbaServer.domain.user.controller.dto.response.UserLoginResponseDto;
-import sopt.org.umbbaServer.domain.user.service.AuthService;
-import sopt.org.umbbaServer.domain.user.social.kakao.KakaoLoginService;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
-import sopt.org.umbbaServer.global.config.jwt.JwtProvider;
-import sopt.org.umbbaServer.global.config.jwt.TokenDto;
-import sopt.org.umbbaServer.global.exception.SuccessType;
+import sopt.org.umbba.api.config.jwt.JwtProvider;
+import sopt.org.umbba.api.config.jwt.TokenDto;
+import sopt.org.umbba.api.controller.user.dto.request.RefreshRequestDto;
+import sopt.org.umbba.api.controller.user.dto.request.SocialLoginRequestDto;
+import sopt.org.umbba.api.controller.user.dto.response.UserLoginResponseDto;
+import sopt.org.umbba.api.service.user.AuthService;
+import sopt.org.umbba.api.service.user.social.kakao.KakaoLoginService;
+import sopt.org.umbba.common.exception.SuccessType;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
 
 import java.security.NoSuchAlgorithmException;
 import java.security.Principal;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/RefreshRequestDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/RefreshRequestDto.java
similarity index 85%
rename from src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/RefreshRequestDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/RefreshRequestDto.java
index a0551ba5..525728fa 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/RefreshRequestDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/RefreshRequestDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.user.controller.dto.request;
+package sopt.org.umbba.api.controller.user.dto.request;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/SocialLoginRequestDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/SocialLoginRequestDto.java
similarity index 86%
rename from src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/SocialLoginRequestDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/SocialLoginRequestDto.java
index 5917fefa..c89ced53 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/SocialLoginRequestDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/SocialLoginRequestDto.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.user.controller.dto.request;
+package sopt.org.umbba.api.controller.user.dto.request;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/UserInfoDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/UserInfoDto.java
similarity index 89%
rename from src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/UserInfoDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/UserInfoDto.java
index b37a1115..9336b0b4 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/request/UserInfoDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/request/UserInfoDto.java
@@ -1,10 +1,10 @@
-package sopt.org.umbbaServer.domain.user.controller.dto.request;
+package sopt.org.umbba.api.controller.user.dto.request;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.user.model.User;
+import sopt.org.umbba.domain.domain.user.User;
 
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/response/UserLoginResponseDto.java b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/response/UserLoginResponseDto.java
similarity index 87%
rename from src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/response/UserLoginResponseDto.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/response/UserLoginResponseDto.java
index 4aede703..015b8442 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/controller/dto/response/UserLoginResponseDto.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/controller/user/dto/response/UserLoginResponseDto.java
@@ -1,12 +1,12 @@
-package sopt.org.umbbaServer.domain.user.controller.dto.response;
+package sopt.org.umbba.api.controller.user.dto.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 import lombok.Builder;
 import lombok.Getter;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.social.SocialPlatform;
-import sopt.org.umbbaServer.global.config.jwt.TokenDto;
+import sopt.org.umbba.api.config.jwt.TokenDto;
+import sopt.org.umbba.domain.domain.user.SocialPlatform;
+import sopt.org.umbba.domain.domain.user.User;
 
 @Getter
 @Builder
diff --git a/umbba-api/src/main/java/sopt/org/umbba/api/service/notification/NotificationService.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/notification/NotificationService.java
new file mode 100644
index 00000000..80c8c33e
--- /dev/null
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/notification/NotificationService.java
@@ -0,0 +1,50 @@
+package sopt.org.umbba.api.service.notification;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import sopt.org.umbba.api.config.sqs.producer.SqsProducer;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.common.sqs.dto.FCMPushRequestDto;
+import sopt.org.umbba.common.sqs.dto.SlackDto;
+import sopt.org.umbba.domain.domain.user.User;
+import sopt.org.umbba.domain.domain.user.repository.UserRepository;
+
+import java.io.IOException;
+
+/**
+ * SQS 대기열로 알림 메시지를 추가
+ */
+@Slf4j
+@RequiredArgsConstructor
+@Service
+@Transactional
+public class NotificationService {
+
+    private final SqsProducer sqsProducer;
+    private final UserRepository userRepository;
+
+    public void pushOpponentReply(String question, Long userId) {
+
+        // 상대 측 유저의 FCM 토큰 찾기
+        User user = userRepository.findById(userId).orElseThrow(
+                () -> new CustomException(ErrorType.INVALID_USER)
+        );
+
+        log.info("상대방 답변 완료!");
+        sqsProducer.produce(FCMPushRequestDto.sendOpponentReply(user.getFcmToken(), question));
+
+        /* try {
+            log.info("상대방 답변 완료!");
+            sqsProducer.produce(FCMPushRequestDto.sendOpponentReply(user.getFcmToken(), question));
+        } catch (IOException e) {
+            log.error("푸시메시지 전송 실패 - IOException: {}", e.getMessage());
+            throw new CustomException(ErrorType.FAIL_TO_SEND_PUSH_ALARM);
+        } catch (FirebaseMessagingException e) {
+            log.error("푸시메시지 전송 실패 - FirebaseMessagingException: {}", e.getMessage());
+            throw new CustomException(ErrorType.FAIL_TO_SEND_PUSH_ALARM);
+        }*/
+    }
+}
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/service/ParentchildService.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/parentchild/ParentchildService.java
similarity index 78%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/service/ParentchildService.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/parentchild/ParentchildService.java
index 65140a58..9cb2c8db 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/service/ParentchildService.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/parentchild/ParentchildService.java
@@ -1,29 +1,27 @@
-package sopt.org.umbbaServer.domain.parentchild.service;
+package sopt.org.umbba.api.service.parentchild;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.RandomStringUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.request.InviteCodeRequestDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.request.OnboardingInviteRequestDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.request.OnboardingReceiveRequestDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.response.InviteResultResponseDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.response.OnboardingInviteResponseDto;
-import sopt.org.umbbaServer.domain.parentchild.controller.dto.response.OnboardingReceiveResponseDto;
-import sopt.org.umbbaServer.domain.parentchild.dao.ParentchildDao;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.parentchild.model.ParentchildRelation;
-import sopt.org.umbbaServer.domain.parentchild.repository.ParentchildRepository;
-import sopt.org.umbbaServer.domain.qna.model.OnboardingAnswer;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.repository.UserRepository;
-import sopt.org.umbbaServer.global.config.ScheduleConfig;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
-import sopt.org.umbbaServer.global.util.fcm.FCMScheduler;
-import sopt.org.umbbaServer.global.util.fcm.FCMService;
-
+import sopt.org.umbba.api.controller.parentchild.dto.request.InviteCodeRequestDto;
+import sopt.org.umbba.api.controller.parentchild.dto.request.OnboardingInviteRequestDto;
+import sopt.org.umbba.api.controller.parentchild.dto.request.OnboardingReceiveRequestDto;
+import sopt.org.umbba.api.controller.parentchild.dto.response.InviteResultResponseDto;
+import sopt.org.umbba.api.controller.parentchild.dto.response.OnboardingInviteResponseDto;
+import sopt.org.umbba.api.controller.parentchild.dto.response.OnboardingReceiveResponseDto;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.parentchild.ParentchildRelation;
+import sopt.org.umbba.domain.domain.parentchild.dao.ParentchildDao;
+import sopt.org.umbba.domain.domain.parentchild.repository.ParentchildRepository;
+import sopt.org.umbba.domain.domain.qna.OnboardingAnswer;
+import sopt.org.umbba.domain.domain.user.User;
+import sopt.org.umbba.domain.domain.user.repository.UserRepository;
+
+import javax.validation.Valid;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -36,8 +34,7 @@ public class ParentchildService {
     private final ParentchildRepository parentchildRepository;
     private final UserRepository userRepository;
     private final ParentchildDao parentchildDao;
-    private final FCMScheduler fcmScheduler;
-    private final FCMService fcmService;
+//    private final FCMScheduler fcmScheduler; TODO ⭐️SQS로 변경
 
     // [발신] 초대하는 측의 온보딩 정보 입력
     @Transactional
@@ -123,9 +120,9 @@ public OnboardingReceiveResponseDto onboardReceive(Long userId, OnboardingReceiv
         /*if (!ParentchildRelation.validate(parentChildUsers, parentchild.getRelation())) {
             throw new CustomException(ErrorType.INVALID_PARENT_CHILD_RELATION);
         }*/
-        ScheduleConfig.resetScheduler();
-        fcmScheduler.pushTodayQna();
-
+        // TODO ⭐️SQS로 변경
+//        ScheduleConfig.resetScheduler();
+//        fcmScheduler.pushTodayQna();
 
         return OnboardingReceiveResponseDto.of(parentchild, user, parentChildUsers);
 
@@ -140,7 +137,7 @@ private String generateInviteCode() {
 
     // 초대코드 확인 후 부모자식 관계 성립
     @Transactional
-    public InviteResultResponseDto matchRelation(Long userId, InviteCodeRequestDto request) {
+    public InviteResultResponseDto matchRelation(Long userId, @Valid InviteCodeRequestDto request) {
 
         log.info("ParentchlidService 실행 - 요청 초대코드: {}", request.getInviteCode());
         Parentchild newMatchRelation = parentchildRepository.findByInviteCode(request.getInviteCode()).orElseThrow(
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/service/QnAService.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/qna/QnAService.java
similarity index 84%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/service/QnAService.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/qna/QnAService.java
index a4a3e2e5..434dc8f5 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/service/QnAService.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/qna/QnAService.java
@@ -1,34 +1,37 @@
-package sopt.org.umbbaServer.domain.qna.service;
+package sopt.org.umbba.api.service.qna;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.jetbrains.annotations.NotNull;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import sopt.org.umbbaServer.domain.parentchild.dao.ParentchildDao;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.qna.controller.dto.request.TodayAnswerRequestDto;
-import sopt.org.umbbaServer.domain.qna.controller.dto.response.*;
-import sopt.org.umbbaServer.domain.qna.model.*;
-import sopt.org.umbbaServer.domain.qna.repository.QnARepository;
-import sopt.org.umbbaServer.domain.qna.repository.QuestionRepository;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.repository.UserRepository;
-import sopt.org.umbbaServer.domain.user.social.SocialPlatform;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
-import sopt.org.umbbaServer.global.util.fcm.FCMService;
-import sopt.org.umbbaServer.global.util.fcm.controller.dto.FCMPushRequestDto;
-
-import java.util.ArrayList;
+import sopt.org.umbba.api.config.sqs.producer.SqsProducer;
+import sopt.org.umbba.api.controller.qna.dto.request.TodayAnswerRequestDto;
+import sopt.org.umbba.api.controller.qna.dto.response.*;
+import sopt.org.umbba.api.service.notification.NotificationService;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.parentchild.dao.ParentchildDao;
+import sopt.org.umbba.domain.domain.qna.OnboardingAnswer;
+import sopt.org.umbba.domain.domain.qna.QnA;
+import sopt.org.umbba.domain.domain.qna.Question;
+import sopt.org.umbba.domain.domain.qna.repository.QnARepository;
+import sopt.org.umbba.domain.domain.qna.repository.QuestionRepository;
+import sopt.org.umbba.domain.domain.user.SocialPlatform;
+import sopt.org.umbba.domain.domain.user.User;
+import sopt.org.umbba.domain.domain.user.repository.UserRepository;
+
+import javax.validation.constraints.NotNull;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import static sopt.org.umbbaServer.domain.qna.model.OnboardingAnswer.*;
-import static sopt.org.umbbaServer.domain.qna.model.QuestionSection.*;
-import static sopt.org.umbbaServer.domain.qna.model.QuestionType.*;
+import static sopt.org.umbba.domain.domain.qna.OnboardingAnswer.NO;
+import static sopt.org.umbba.domain.domain.qna.OnboardingAnswer.YES;
+import static sopt.org.umbba.domain.domain.qna.QuestionSection.*;
+import static sopt.org.umbba.domain.domain.qna.QuestionType.*;
+
 
 @Slf4j
 @Service
@@ -40,7 +43,7 @@ public class QnAService {
     private final QuestionRepository questionRepository;
     private final UserRepository userRepository;
     private final ParentchildDao parentchildDao;
-    private final FCMService fcmService;  //TODO Service에서 Service를 주입받는 부분 수정
+    private final NotificationService notificationService;
 
     public TodayQnAResponseDto getTodayQnA(Long userId) {
 
@@ -81,10 +84,12 @@ public void answerTodayQuestion(Long userId, TodayAnswerRequestDto request) {
 
         if (myUser.isMeChild()) {
             todayQnA.saveChildAnswer(request.getAnswer());
-            fcmService.pushOpponentReply(todayQnA.getQuestion().getParentQuestion(), opponentUser.getId());
+            notificationService.pushOpponentReply(todayQnA.getQuestion().getChildQuestion(), opponentUser.getId());
+//            fcmService.pushOpponentReply(todayQnA.getQuestion().getChildQuestion(), opponentUser.getId());
         } else {
             todayQnA.saveParentAnswer(request.getAnswer());
-            fcmService.pushOpponentReply(todayQnA.getQuestion().getChildQuestion(), opponentUser.getId());
+            notificationService.pushOpponentReply(todayQnA.getQuestion().getParentQuestion(), opponentUser.getId());
+//            fcmService.pushOpponentReply(todayQnA.getQuestion().getParentQuestion(), opponentUser.getId());
         }
     }
 
@@ -236,7 +241,7 @@ private User getOpponentByParentchild(Parentchild parentchild, Long userId) {
     }
 
     @Transactional
-    private void customQuestion(List<OnboardingAnswer> childList, List<OnboardingAnswer> parentList, List<QnA> qnAList) {
+    public void customQuestion(List<OnboardingAnswer> childList, List<OnboardingAnswer> parentList, List<QnA> qnAList) {
 
         // Type 1 : 1번째 선택 질문인 거주 현황에 대해 한명이라도 아니/애매해라고 답한 경우
         if (childList.get(0) != YES || parentList.get(0) !=YES) {
@@ -319,7 +324,7 @@ private GetInvitationResponseDto invitation(Long userId) {
                 () -> new CustomException(ErrorType.USER_HAVE_NO_PARENTCHILD)
         );
 
-        return GetInvitationResponseDto.of(parentchild.getInviteCode(), user.getUsername(), "http://umbba.site/");  // TODO url 설정 필요 (Firebase)
+        return GetInvitationResponseDto.of(parentchild.getInviteCode(), user.getUsername(), "http://umbba.site/");  // TODO Firebase 동적링크 연결 예정
     }
 
     private GetInvitationResponseDto withdrawUser() {
@@ -343,9 +348,10 @@ public void updateDemoList(Long userId) {
         }
         QnA fifthQnA = getTodayQnAByParentchild(parentchild);
         log.info("💖💖💖💖Day 5 QnA: {}", fifthQnA.getId());
-        fcmService.multipleSendByToken(FCMPushRequestDto.sendTodayQna(
-                fifthQnA.getQuestion().getSection().getValue(),
-                fifthQnA.getQuestion().getTopic()), parentchild.getId());
+        //TODO ⭐️SQS로 변경
+//        fcmService.multipleSendByToken(FCMPushRequestDto.sendTodayQna(
+//                fifthQnA.getQuestion().getSection().getValue(),
+//                fifthQnA.getQuestion().getTopic()), parentchild.getId());
 
     }
 
@@ -360,9 +366,10 @@ public void todayUpdate(Long userId) {
                 "오구 내 똥강아지~ 어렸을 때는 매일 볼 수 있었는데, 어른이 되고 나서 자주 못봐서 너무 아쉽다... 연락 잘하거라 요녀석~");
 
         QnA todayQnA = getTodayQnAByParentchild(parentchild);
-        fcmService.multipleSendByToken(FCMPushRequestDto.sendTodayQna(
-                todayQnA.getQuestion().getSection().getValue(),
-                todayQnA.getQuestion().getTopic()), parentchild.getId());
+        //TODO ⭐️SQS로 변경
+//        fcmService.multipleSendByToken(FCMPushRequestDto.sendTodayQna(
+//                todayQnA.getQuestion().getSection().getValue(),
+//                todayQnA.getQuestion().getTopic()), parentchild.getId());
     }
 
     private void updateDay(Parentchild parentchild, String childAnswer, String parentAnswer) {
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/service/AuthService.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/AuthService.java
similarity index 83%
rename from src/main/java/sopt/org/umbbaServer/domain/user/service/AuthService.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/user/AuthService.java
index aa7d8da7..beb26084 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/service/AuthService.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/AuthService.java
@@ -1,24 +1,23 @@
-package sopt.org.umbbaServer.domain.user.service;
-
+package sopt.org.umbba.api.service.user;
 
 import feign.FeignException;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.RefreshRequestDto;
-import sopt.org.umbbaServer.domain.user.controller.dto.request.SocialLoginRequestDto;
-import sopt.org.umbbaServer.domain.user.controller.dto.response.UserLoginResponseDto;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.repository.UserRepository;
-import sopt.org.umbbaServer.domain.user.social.SocialPlatform;
-import sopt.org.umbbaServer.domain.user.social.apple.AppleLoginService;
-import sopt.org.umbbaServer.domain.user.social.kakao.KakaoLoginService;
-import sopt.org.umbbaServer.global.config.auth.UserAuthentication;
-import sopt.org.umbbaServer.global.config.jwt.JwtProvider;
-import sopt.org.umbbaServer.global.config.jwt.TokenDto;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.api.config.auth.UserAuthentication;
+import sopt.org.umbba.api.config.jwt.JwtProvider;
+import sopt.org.umbba.api.config.jwt.TokenDto;
+import sopt.org.umbba.api.controller.user.dto.request.RefreshRequestDto;
+import sopt.org.umbba.api.controller.user.dto.request.SocialLoginRequestDto;
+import sopt.org.umbba.api.controller.user.dto.response.UserLoginResponseDto;
+import sopt.org.umbba.api.service.user.social.apple.AppleLoginService;
+import sopt.org.umbba.api.service.user.social.kakao.KakaoLoginService;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.domain.domain.user.SocialPlatform;
+import sopt.org.umbba.domain.domain.user.User;
+import sopt.org.umbba.domain.domain.user.repository.UserRepository;
 
 import java.security.NoSuchAlgorithmException;
 import java.security.spec.InvalidKeySpecException;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/AppleLoginService.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/AppleLoginService.java
similarity index 66%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/AppleLoginService.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/AppleLoginService.java
index a4438666..d4624410 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/AppleLoginService.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/AppleLoginService.java
@@ -1,15 +1,16 @@
-package sopt.org.umbbaServer.domain.user.social.apple;
+package sopt.org.umbba.api.service.user.social.apple;
 
 import io.jsonwebtoken.Claims;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
-import sopt.org.umbbaServer.domain.user.social.apple.feign.AppleApiClient;
-import sopt.org.umbbaServer.domain.user.social.apple.response.ApplePublicKeys;
-import sopt.org.umbbaServer.domain.user.social.apple.verify.AppleClaimsValidator;
-import sopt.org.umbbaServer.domain.user.social.apple.verify.AppleJwtParser;
-import sopt.org.umbbaServer.domain.user.social.apple.verify.PublicKeyGenerator;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.api.service.user.social.apple.verify.AppleClaimsValidator;
+import sopt.org.umbba.api.service.user.social.apple.verify.AppleJwtParser;
+import sopt.org.umbba.api.service.user.social.apple.verify.PublicKeyGenerator;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.external.client.auth.apple.AppleApiClient;
+import sopt.org.umbba.external.client.auth.apple.response.ApplePublicKeys;
+
 
 import java.security.PublicKey;
 import java.util.Map;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/AppleClaimsValidator.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/AppleClaimsValidator.java
similarity index 93%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/AppleClaimsValidator.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/AppleClaimsValidator.java
index e5eb7500..f25deb13 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/AppleClaimsValidator.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/AppleClaimsValidator.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.user.social.apple.verify;
+package sopt.org.umbba.api.service.user.social.apple.verify;
 
 import io.jsonwebtoken.Claims;
 import org.springframework.beans.factory.annotation.Value;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/AppleJwtParser.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/AppleJwtParser.java
similarity index 90%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/AppleJwtParser.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/AppleJwtParser.java
index 88e5f6bf..33942031 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/AppleJwtParser.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/AppleJwtParser.java
@@ -1,12 +1,12 @@
-package sopt.org.umbbaServer.domain.user.social.apple.verify;
+package sopt.org.umbba.api.service.user.social.apple.verify;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import io.jsonwebtoken.*;
 import org.springframework.stereotype.Component;
 import org.springframework.util.Base64Utils;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
 
 import java.security.PublicKey;
 import java.util.Map;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/EncryptUtils.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/EncryptUtils.java
similarity index 80%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/EncryptUtils.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/EncryptUtils.java
index 486b0902..2211ed45 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/EncryptUtils.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/EncryptUtils.java
@@ -1,7 +1,8 @@
-package sopt.org.umbbaServer.domain.user.social.apple.verify;
+package sopt.org.umbba.api.service.user.social.apple.verify;
 
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
 
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/PublicKeyGenerator.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/PublicKeyGenerator.java
similarity index 83%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/PublicKeyGenerator.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/PublicKeyGenerator.java
index b2c37944..5e86e6e1 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/verify/PublicKeyGenerator.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/apple/verify/PublicKeyGenerator.java
@@ -1,11 +1,11 @@
-package sopt.org.umbbaServer.domain.user.social.apple.verify;
+package sopt.org.umbba.api.service.user.social.apple.verify;
 
 import org.springframework.stereotype.Component;
 import org.springframework.util.Base64Utils;
-import sopt.org.umbbaServer.domain.user.social.apple.response.ApplePublicKey;
-import sopt.org.umbbaServer.domain.user.social.apple.response.ApplePublicKeys;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.external.client.auth.apple.response.ApplePublicKey;
+import sopt.org.umbba.external.client.auth.apple.response.ApplePublicKeys;
 
 import java.math.BigInteger;
 import java.security.KeyFactory;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/KakaoLoginService.java b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/kakao/KakaoLoginService.java
similarity index 82%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/KakaoLoginService.java
rename to umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/kakao/KakaoLoginService.java
index 54f18bda..e04aeb9c 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/KakaoLoginService.java
+++ b/umbba-api/src/main/java/sopt/org/umbba/api/service/user/social/kakao/KakaoLoginService.java
@@ -1,14 +1,14 @@
-package sopt.org.umbbaServer.domain.user.social.kakao;
+package sopt.org.umbba.api.service.user.social.kakao;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.social.kakao.feign.KakaoApiClient;
-import sopt.org.umbbaServer.domain.user.social.kakao.feign.KakaoAuthApiClient;
-import sopt.org.umbbaServer.domain.user.social.kakao.response.KakaoAccessTokenResponse;
-import sopt.org.umbbaServer.domain.user.social.kakao.response.KakaoUserResponse;
+import sopt.org.umbba.domain.domain.user.User;
+import sopt.org.umbba.external.client.auth.kakao.KakaoApiClient;
+import sopt.org.umbba.external.client.auth.kakao.KakaoAuthApiClient;
+import sopt.org.umbba.external.client.auth.kakao.response.KakaoAccessTokenResponse;
+import sopt.org.umbba.external.client.auth.kakao.response.KakaoUserResponse;
 
 @Service
 @Transactional
diff --git a/src/main/resources/application.yaml b/umbba-api/src/main/resources/application.yaml
similarity index 88%
rename from src/main/resources/application.yaml
rename to umbba-api/src/main/resources/application.yaml
index 9b76edcd..6b561220 100644
--- a/src/main/resources/application.yaml
+++ b/umbba-api/src/main/resources/application.yaml
@@ -9,6 +9,14 @@ cloud:
       bucket: ${bucket-name}
     stack:
       auto: false
+    sqs:
+      notification:
+        name: ${sqs-notification-name}
+        url: ${sqs-notification-url}
+      #api:
+      #  name: ${sqs-api-name}
+      #  url: ${sqs-api-url}
+
 
 spring:
   datasource:
@@ -16,7 +24,6 @@ spring:
     url: ${db-url}
     username: ${db-user}
     password: ${db-pwd}
-
     hikari:
       pool-name: Hikari 커넥션 풀  # Pool
       connection-timeout: 30000 # 30초(default: 30초)
@@ -71,4 +78,4 @@ logging:
     com.zaxxer.hikari.pool.HikariPool: debug
 
 server:
-  port: 9091
+  port: 9091
\ No newline at end of file
diff --git a/umbba-common/build.gradle b/umbba-common/build.gradle
new file mode 100644
index 00000000..5a66b154
--- /dev/null
+++ b/umbba-common/build.gradle
@@ -0,0 +1,10 @@
+bootJar { enabled = false }
+jar { enabled = true }
+dependencies {
+
+    // for HttpStatus
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+
+    // Jackson
+    implementation group: "io.jsonwebtoken", name: "jjwt-jackson", version: "0.11.2"
+}
\ No newline at end of file
diff --git a/umbba-common/src/main/java/sopt/org/umbba/common/UmbbaCommonRoot.java b/umbba-common/src/main/java/sopt/org/umbba/common/UmbbaCommonRoot.java
new file mode 100644
index 00000000..14910c5f
--- /dev/null
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/UmbbaCommonRoot.java
@@ -0,0 +1,8 @@
+package sopt.org.umbba.common;
+
+import org.springframework.context.annotation.ComponentScan;
+
+@ComponentScan(basePackageClasses = {UmbbaCommonRoot.class})
+public interface UmbbaCommonRoot {
+
+}
diff --git a/src/main/java/sopt/org/umbbaServer/global/exception/ErrorType.java b/umbba-common/src/main/java/sopt/org/umbba/common/exception/ErrorType.java
similarity index 99%
rename from src/main/java/sopt/org/umbbaServer/global/exception/ErrorType.java
rename to umbba-common/src/main/java/sopt/org/umbba/common/exception/ErrorType.java
index 73c386b8..361b75eb 100644
--- a/src/main/java/sopt/org/umbbaServer/global/exception/ErrorType.java
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/exception/ErrorType.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.exception;
+package sopt.org.umbba.common.exception;
 
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
diff --git a/src/main/java/sopt/org/umbbaServer/global/exception/SuccessType.java b/umbba-common/src/main/java/sopt/org/umbba/common/exception/SuccessType.java
similarity index 96%
rename from src/main/java/sopt/org/umbbaServer/global/exception/SuccessType.java
rename to umbba-common/src/main/java/sopt/org/umbba/common/exception/SuccessType.java
index 2b59321c..c1ab240b 100644
--- a/src/main/java/sopt/org/umbbaServer/global/exception/SuccessType.java
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/exception/SuccessType.java
@@ -1,6 +1,5 @@
-package sopt.org.umbbaServer.global.exception;
+package sopt.org.umbba.common.exception;
 
-import com.google.api.Http;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
diff --git a/src/main/java/sopt/org/umbbaServer/global/common/dto/ApiResponse.java b/umbba-common/src/main/java/sopt/org/umbba/common/exception/dto/ApiResponse.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/global/common/dto/ApiResponse.java
rename to umbba-common/src/main/java/sopt/org/umbba/common/exception/dto/ApiResponse.java
index ce638ddc..d86fc811 100644
--- a/src/main/java/sopt/org/umbbaServer/global/common/dto/ApiResponse.java
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/exception/dto/ApiResponse.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.common.dto;
+package sopt.org.umbba.common.exception.dto;
 
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
@@ -6,8 +6,8 @@
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
-import sopt.org.umbbaServer.global.exception.ErrorType;
-import sopt.org.umbbaServer.global.exception.SuccessType;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.SuccessType;
 
 @Getter
 @JsonPropertyOrder({"status", "message", "data"})
diff --git a/src/main/java/sopt/org/umbbaServer/global/exception/CustomException.java b/umbba-common/src/main/java/sopt/org/umbba/common/exception/model/CustomException.java
similarity index 78%
rename from src/main/java/sopt/org/umbbaServer/global/exception/CustomException.java
rename to umbba-common/src/main/java/sopt/org/umbba/common/exception/model/CustomException.java
index 5539429e..8d4e568d 100644
--- a/src/main/java/sopt/org/umbbaServer/global/exception/CustomException.java
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/exception/model/CustomException.java
@@ -1,6 +1,7 @@
-package sopt.org.umbbaServer.global.exception;
+package sopt.org.umbba.common.exception.model;
 
 import lombok.Getter;
+import sopt.org.umbba.common.exception.ErrorType;
 
 @Getter
 public class CustomException extends RuntimeException {
diff --git a/umbba-common/src/main/java/sopt/org/umbba/common/sqs/MessageType.java b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/MessageType.java
new file mode 100644
index 00000000..2fd110db
--- /dev/null
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/MessageType.java
@@ -0,0 +1,12 @@
+package sopt.org.umbba.common.sqs;
+
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public final class MessageType {
+
+	public static final String MESSAGE_TYPE_HEADER = "TYPE";
+	public static final String FIREBASE = "FIREBASE";
+	public static final String SLACK = "SLACK";
+}
diff --git a/umbba-common/src/main/java/sopt/org/umbba/common/sqs/MessageUtils.java b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/MessageUtils.java
new file mode 100644
index 00000000..a2dcd1c7
--- /dev/null
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/MessageUtils.java
@@ -0,0 +1,17 @@
+package sopt.org.umbba.common.sqs;
+
+public class MessageUtils {
+
+	public static <P1> String generate(String message, P1 param1) {
+		return String.format(message, param1);
+	}
+
+	public static <P1, P2> String generate(String message, P1 param1, P2 param2) {
+		return String.format(message, param1, param2);
+	}
+
+	public static <P1, P2, P3> String generate(String message, P1 param1, P2 param2, P3 param3) {
+		return String.format(message, param1, param2, param3);
+	}
+
+}
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/FCMPushRequestDto.java b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/FCMPushRequestDto.java
similarity index 83%
rename from src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/FCMPushRequestDto.java
rename to umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/FCMPushRequestDto.java
index d5e528a4..923faad7 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/FCMPushRequestDto.java
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/FCMPushRequestDto.java
@@ -1,18 +1,17 @@
-package sopt.org.umbbaServer.global.util.fcm.controller.dto;
+package sopt.org.umbba.common.sqs.dto;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import lombok.*;
+import lombok.experimental.SuperBuilder;
 import lombok.extern.slf4j.Slf4j;
-
-import java.util.logging.Logger;
+import sopt.org.umbba.common.sqs.MessageType;
 
 @Slf4j
 @Getter
-@Builder
+@SuperBuilder
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
-public class FCMPushRequestDto {
+public class FCMPushRequestDto extends MessageDto{
 
     private String targetToken;
 
@@ -27,6 +26,7 @@ public class FCMPushRequestDto {
     public static FCMPushRequestDto sendTodayQna(String section, String topic) {
 
         return FCMPushRequestDto.builder()
+                .type(MessageType.FIREBASE)
                 .title("📞" + section + PushMessage.TODAY_QNA.getTitle())
                 .body("'" + topic + PushMessage.TODAY_QNA.getBody())
                 .build();
@@ -36,6 +36,7 @@ public static FCMPushRequestDto sendTodayQna(String section, String topic) {
     public static FCMPushRequestDto sendOpponentReply(String targetToken, String question) {
 
         return FCMPushRequestDto.builder()
+                .type(MessageType.FIREBASE)
                 .targetToken(targetToken)
                 .title(PushMessage.OPPONENT_REPLY.getTitle())
                 .body("'" + question + PushMessage.OPPONENT_REPLY.getBody())
diff --git a/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/FirebaseDto.java b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/FirebaseDto.java
new file mode 100644
index 00000000..329e604d
--- /dev/null
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/FirebaseDto.java
@@ -0,0 +1,26 @@
+package sopt.org.umbba.common.sqs.dto;
+
+import lombok.*;
+import lombok.experimental.SuperBuilder;
+import sopt.org.umbba.common.sqs.MessageType;
+
+@ToString
+@Getter
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@SuperBuilder
+public class FirebaseDto extends MessageDto {
+
+	private String fcmToken;
+	private String title;
+	private String body;
+
+	public static FirebaseDto of(String fcmToken, String title, String body) {
+		return FirebaseDto.builder()
+			.type(MessageType.FIREBASE)
+			.fcmToken(fcmToken)
+			.title(title)
+			.body(body)
+			.build();
+	}
+}
diff --git a/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/MessageDto.java b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/MessageDto.java
new file mode 100644
index 00000000..84ea7620
--- /dev/null
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/MessageDto.java
@@ -0,0 +1,14 @@
+package sopt.org.umbba.common.sqs.dto;
+
+import lombok.*;
+import lombok.experimental.SuperBuilder;
+
+@ToString
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
+@SuperBuilder
+public class MessageDto {
+
+	protected String type;
+}
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/PushMessage.java b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/PushMessage.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/PushMessage.java
rename to umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/PushMessage.java
index 35d205ec..9ab5ea22 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/PushMessage.java
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/PushMessage.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.util.fcm.controller.dto;
+package sopt.org.umbba.common.sqs.dto;
 
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
diff --git a/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/SlackDto.java b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/SlackDto.java
new file mode 100644
index 00000000..fdcd3bbc
--- /dev/null
+++ b/umbba-common/src/main/java/sopt/org/umbba/common/sqs/dto/SlackDto.java
@@ -0,0 +1,29 @@
+package sopt.org.umbba.common.sqs.dto;
+
+import lombok.*;
+import lombok.experimental.SuperBuilder;
+import sopt.org.umbba.common.sqs.MessageType;
+
+import javax.servlet.http.HttpServletRequest;
+
+@ToString
+@Getter
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@SuperBuilder
+public class SlackDto extends MessageDto {
+
+	private Exception error;
+	private HttpServletRequest request;
+	private String requestMethod;
+	private String requestURI;
+
+	public static SlackDto of(Exception error, String requestMethod, String requestURI) {
+		return SlackDto.builder()
+			.type(MessageType.SLACK)
+			.error(error)
+			.requestMethod(requestMethod)
+			.requestURI(requestURI)
+			.build();
+	}
+}
diff --git a/umbba-domain/build.gradle b/umbba-domain/build.gradle
new file mode 100644
index 00000000..5c44fbc2
--- /dev/null
+++ b/umbba-domain/build.gradle
@@ -0,0 +1,43 @@
+bootJar { enabled = false }
+jar { enabled = true }
+
+dependencies {
+    implementation project(path: ':umbba-common')
+
+    // JPA & Database
+    api "org.springframework.boot:spring-boot-starter-data-jpa"
+    implementation 'mysql:mysql-connector-java:8.0.32'
+//    runtimeOnly "mysql:mysql-connector-java"
+
+    // JSON
+    implementation 'com.googlecode.json-simple:json-simple:1.1.1'
+
+    // redis
+    implementation "org.springframework.boot:spring-boot-starter-data-redis"
+    implementation "org.springframework.session:spring-session-data-redis"
+
+    // jackson
+    implementation group: "io.jsonwebtoken", name: "jjwt-jackson", version: "0.11.2"
+
+    // querydsl
+//    implementation "com.querydsl:querydsl-jpa"
+//    implementation "com.querydsl:querydsl-core"
+//    annotationProcessor "com.querydsl:querydsl-apt:${dependencyManagement.importedProperties["querydsl.version"]}:jpa"
+//    annotationProcessor "jakarta.persistence:jakarta.persistence-api:2.2.3"
+//    annotationProcessor "jakarta.annotation:jakarta.annotation-api:1.3.5"
+}
+
+//def queryDslDir = "build/querydsl/generated"
+//
+//sourceSets {
+//    main.java.srcDirs += [queryDslDir]
+//}
+//
+//tasks.withType(JavaCompile) {
+//    options.annotationProcessorGeneratedSourcesDirectory = file(queryDslDir)
+//}
+//
+//clean.doLast {
+//    file(queryDslDir).deleteDir()
+//}
+
diff --git a/umbba-domain/src/main/java/sopt/org/umbba/domain/UmbbaDomainRoot.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/UmbbaDomainRoot.java
new file mode 100644
index 00000000..0a867733
--- /dev/null
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/UmbbaDomainRoot.java
@@ -0,0 +1,7 @@
+package sopt.org.umbba.domain;
+
+import org.springframework.context.annotation.ComponentScan;
+
+@ComponentScan(basePackageClasses = {UmbbaDomainRoot.class})
+public interface UmbbaDomainRoot {
+}
diff --git a/umbba-domain/src/main/java/sopt/org/umbba/domain/config/jpa/JpaConfig.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/config/jpa/JpaConfig.java
new file mode 100644
index 00000000..0e0ab3c6
--- /dev/null
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/config/jpa/JpaConfig.java
@@ -0,0 +1,14 @@
+package sopt.org.umbba.domain.config.jpa;
+
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+import sopt.org.umbba.domain.UmbbaDomainRoot;
+
+@Configuration
+@EntityScan(basePackageClasses = {UmbbaDomainRoot.class})
+@EnableJpaRepositories(basePackageClasses = {UmbbaDomainRoot.class})
+@EnableJpaAuditing
+public class JpaConfig {
+}
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/AuditingTimeEntity.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/common/AuditingTimeEntity.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/global/util/AuditingTimeEntity.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/common/AuditingTimeEntity.java
index e400d722..0c085732 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/AuditingTimeEntity.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/common/AuditingTimeEntity.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.util;
+package sopt.org.umbba.domain.domain.common;
 
 import lombok.Getter;
 import org.springframework.data.annotation.CreatedDate;
@@ -19,4 +19,4 @@ public abstract class AuditingTimeEntity {
 
     @LastModifiedDate
     private LocalDateTime updatedAt;
-}
+}
\ No newline at end of file
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/model/Parentchild.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/Parentchild.java
similarity index 87%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/model/Parentchild.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/Parentchild.java
index 166c5a0e..b77985e0 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/model/Parentchild.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/Parentchild.java
@@ -1,11 +1,10 @@
-package sopt.org.umbbaServer.domain.parentchild.model;
+package sopt.org.umbba.domain.domain.parentchild;
 
 import lombok.*;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.transaction.annotation.Transactional;
-import sopt.org.umbbaServer.domain.qna.model.OnboardingAnswer;
-import sopt.org.umbbaServer.domain.qna.model.QnA;
-import sopt.org.umbbaServer.global.util.AuditingTimeEntity;
+import sopt.org.umbba.domain.domain.common.AuditingTimeEntity;
+import sopt.org.umbba.domain.domain.qna.OnboardingAnswer;
+import sopt.org.umbba.domain.domain.qna.QnA;
 
 import javax.persistence.*;
 import java.time.LocalTime;
@@ -48,11 +47,13 @@ public void addCount() {
     @Enumerated(EnumType.STRING)
     @Column(name = "answer", nullable = false)
     @ElementCollection
+    @Builder.Default
     private List<OnboardingAnswer> childOnboardingAnswerList = new ArrayList<>();
 
     @Enumerated(EnumType.STRING)
     @Column(name = "answer", nullable = false)
     @ElementCollection
+    @Builder.Default
     private List<OnboardingAnswer> parentOnboardingAnswerList = new ArrayList<>();
 
     public void changeChildOnboardingAnswerList(List<OnboardingAnswer> onboardingAnswerList) {
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/model/ParentchildRelation.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/ParentchildRelation.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/model/ParentchildRelation.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/ParentchildRelation.java
index 4ed3a377..39a84dc2 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/model/ParentchildRelation.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/ParentchildRelation.java
@@ -1,11 +1,11 @@
-package sopt.org.umbbaServer.domain.parentchild.model;
+package sopt.org.umbba.domain.domain.parentchild;
 
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.domain.domain.user.User;
 
 import java.util.List;
 
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/dao/ParentchildDao.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/dao/ParentchildDao.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/dao/ParentchildDao.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/dao/ParentchildDao.java
index a21c66a1..adf41436 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/dao/ParentchildDao.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/dao/ParentchildDao.java
@@ -1,9 +1,9 @@
-package sopt.org.umbbaServer.domain.parentchild.dao;
+package sopt.org.umbba.domain.domain.parentchild.dao;
 
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Repository;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.user.model.User;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.user.User;
 
 import javax.persistence.EntityManager;
 import javax.persistence.NoResultException;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/parentchild/repository/ParentchildRepository.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/repository/ParentchildRepository.java
similarity index 77%
rename from src/main/java/sopt/org/umbbaServer/domain/parentchild/repository/ParentchildRepository.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/repository/ParentchildRepository.java
index 6915353a..f9efe00c 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/parentchild/repository/ParentchildRepository.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/repository/ParentchildRepository.java
@@ -1,7 +1,7 @@
-package sopt.org.umbbaServer.domain.parentchild.repository;
+package sopt.org.umbba.domain.domain.parentchild.repository;
 
 import org.springframework.data.repository.Repository;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
 
 import java.util.List;
 import java.util.Optional;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/model/OnboardingAnswer.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/OnboardingAnswer.java
similarity index 78%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/model/OnboardingAnswer.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/OnboardingAnswer.java
index ab604828..c817bf19 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/model/OnboardingAnswer.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/OnboardingAnswer.java
@@ -1,10 +1,10 @@
-package sopt.org.umbbaServer.domain.qna.model;
+package sopt.org.umbba.domain.domain.qna;
 
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
 
 @Getter
 @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/model/QnA.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QnA.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/model/QnA.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QnA.java
index c81672f6..e689f60b 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/model/QnA.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QnA.java
@@ -1,7 +1,7 @@
-package sopt.org.umbbaServer.domain.qna.model;
+package sopt.org.umbba.domain.domain.qna;
 
 import lombok.*;
-import sopt.org.umbbaServer.global.util.AuditingTimeEntity;
+import sopt.org.umbba.domain.domain.common.AuditingTimeEntity;
 
 import javax.persistence.*;
 
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/model/Question.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/Question.java
similarity index 87%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/model/Question.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/Question.java
index 5b24e078..703645df 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/model/Question.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/Question.java
@@ -1,7 +1,7 @@
-package sopt.org.umbbaServer.domain.qna.model;
+package sopt.org.umbba.domain.domain.qna;
 
 import lombok.*;
-import sopt.org.umbbaServer.global.util.AuditingTimeEntity;
+import sopt.org.umbba.domain.domain.common.AuditingTimeEntity;
 
 import javax.persistence.*;
 
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/model/QuestionSection.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QuestionSection.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/model/QuestionSection.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QuestionSection.java
index 219a8c6d..38ee957d 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/model/QuestionSection.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QuestionSection.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.qna.model;
+package sopt.org.umbba.domain.domain.qna;
 
 import lombok.AccessLevel;
 import lombok.Getter;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/model/QuestionType.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QuestionType.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/model/QuestionType.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QuestionType.java
index c9a5e088..461406c6 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/model/QuestionType.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/QuestionType.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.qna.model;
+package sopt.org.umbba.domain.domain.qna;
 
 import lombok.AccessLevel;
 import lombok.Getter;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/dao/QnADao.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/dao/QnADao.java
similarity index 92%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/dao/QnADao.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/dao/QnADao.java
index f46b3367..bb629199 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/dao/QnADao.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/dao/QnADao.java
@@ -1,8 +1,8 @@
-package sopt.org.umbbaServer.domain.qna.dao;
+package sopt.org.umbba.domain.domain.qna.dao;
 
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Repository;
-import sopt.org.umbbaServer.domain.qna.model.QnA;
+import sopt.org.umbba.domain.domain.qna.QnA;
 
 import javax.persistence.EntityManager;
 import javax.persistence.NoResultException;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/repository/QnARepository.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/repository/QnARepository.java
similarity index 67%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/repository/QnARepository.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/repository/QnARepository.java
index 4bc4033e..a90632b7 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/repository/QnARepository.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/repository/QnARepository.java
@@ -1,7 +1,7 @@
-package sopt.org.umbbaServer.domain.qna.repository;
+package sopt.org.umbba.domain.domain.qna.repository;
 
 import org.springframework.data.repository.Repository;
-import sopt.org.umbbaServer.domain.qna.model.QnA;
+import sopt.org.umbba.domain.domain.qna.QnA;
 
 import java.util.Optional;
 
diff --git a/src/main/java/sopt/org/umbbaServer/domain/qna/repository/QuestionRepository.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/repository/QuestionRepository.java
similarity index 86%
rename from src/main/java/sopt/org/umbbaServer/domain/qna/repository/QuestionRepository.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/repository/QuestionRepository.java
index bd7aa833..1a9d7586 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/qna/repository/QuestionRepository.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/qna/repository/QuestionRepository.java
@@ -1,9 +1,9 @@
-package sopt.org.umbbaServer.domain.qna.repository;
+package sopt.org.umbba.domain.domain.qna.repository;
 
 import org.springframework.data.repository.Repository;
-import sopt.org.umbbaServer.domain.qna.model.Question;
-import sopt.org.umbbaServer.domain.qna.model.QuestionSection;
-import sopt.org.umbbaServer.domain.qna.model.QuestionType;
+import sopt.org.umbba.domain.domain.qna.Question;
+import sopt.org.umbba.domain.domain.qna.QuestionSection;
+import sopt.org.umbba.domain.domain.qna.QuestionType;
 
 import java.util.*;
 import java.util.stream.Collectors;
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/jwt/redis/RefreshToken.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/redis/RefreshToken.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/global/config/jwt/redis/RefreshToken.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/redis/RefreshToken.java
index 9fbe2a3f..5d1f35c7 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/jwt/redis/RefreshToken.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/redis/RefreshToken.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.config.jwt.redis;
+package sopt.org.umbba.domain.domain.redis;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import lombok.AllArgsConstructor;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/SocialPlatform.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/SocialPlatform.java
similarity index 78%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/SocialPlatform.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/SocialPlatform.java
index dd742562..f1503589 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/SocialPlatform.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/SocialPlatform.java
@@ -1,10 +1,10 @@
-package sopt.org.umbbaServer.domain.user.social;
+package sopt.org.umbba.domain.domain.user;
 
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
 
 @Getter
 @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/model/User.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/User.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/domain/user/model/User.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/User.java
index 098e5745..6af074f2 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/model/User.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/User.java
@@ -1,12 +1,9 @@
-package sopt.org.umbbaServer.domain.user.model;
+package sopt.org.umbba.domain.domain.user;
 
 import lombok.*;
 import lombok.extern.slf4j.Slf4j;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.user.social.SocialPlatform;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
-import sopt.org.umbbaServer.global.util.AuditingTimeEntity;
+import sopt.org.umbba.domain.domain.common.AuditingTimeEntity;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
 
 import javax.persistence.*;
 import java.util.List;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/repository/UserRepository.java b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/repository/UserRepository.java
similarity index 77%
rename from src/main/java/sopt/org/umbbaServer/domain/user/repository/UserRepository.java
rename to umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/repository/UserRepository.java
index f513945d..cb6ecdc7 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/repository/UserRepository.java
+++ b/umbba-domain/src/main/java/sopt/org/umbba/domain/domain/user/repository/UserRepository.java
@@ -1,9 +1,9 @@
-package sopt.org.umbbaServer.domain.user.repository;
+package sopt.org.umbba.domain.domain.user.repository;
 
 import org.springframework.data.repository.Repository;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.social.SocialPlatform;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.user.SocialPlatform;
+import sopt.org.umbba.domain.domain.user.User;
 
 import java.util.List;
 import java.util.Optional;
diff --git a/umbba-external/build.gradle b/umbba-external/build.gradle
new file mode 100644
index 00000000..1bc7fa04
--- /dev/null
+++ b/umbba-external/build.gradle
@@ -0,0 +1,15 @@
+bootJar { enabled = false }
+jar { enabled = true }
+
+dependencies {
+    implementation project(":umbba-common")
+
+    // Social Login
+    implementation 'org.springframework.cloud:spring-cloud-starter-openfeign:3.1.7'
+
+    // for JsonIgnore
+    implementation group: "io.jsonwebtoken", name: "jjwt-jackson", version: "0.11.2"
+
+    // spring webflux
+//    implementation "org.springframework.boot:spring-boot-starter-webflux"
+}
\ No newline at end of file
diff --git a/umbba-external/src/main/java/sopt/org/umbba/external/UmbbaExternalRoot.java b/umbba-external/src/main/java/sopt/org/umbba/external/UmbbaExternalRoot.java
new file mode 100644
index 00000000..09e80219
--- /dev/null
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/UmbbaExternalRoot.java
@@ -0,0 +1,7 @@
+package sopt.org.umbba.external;
+
+import org.springframework.context.annotation.ComponentScan;
+
+@ComponentScan(basePackageClasses = {UmbbaExternalRoot.class})
+public interface UmbbaExternalRoot {
+}
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/feign/AppleApiClient.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/AppleApiClient.java
similarity index 68%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/feign/AppleApiClient.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/AppleApiClient.java
index 5ff1d4e4..50897a71 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/feign/AppleApiClient.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/AppleApiClient.java
@@ -1,8 +1,8 @@
-package sopt.org.umbbaServer.domain.user.social.apple.feign;
+package sopt.org.umbba.external.client.auth.apple;
 
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.GetMapping;
-import sopt.org.umbbaServer.domain.user.social.apple.response.ApplePublicKeys;
+import sopt.org.umbba.external.client.auth.apple.response.ApplePublicKeys;
 
 @FeignClient(name = "apple-public-verify-client", url = "https://appleid.apple.com/auth")
 public interface AppleApiClient {
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/response/ApplePublicKey.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/response/ApplePublicKey.java
similarity index 85%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/response/ApplePublicKey.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/response/ApplePublicKey.java
index 071f7523..402f9081 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/response/ApplePublicKey.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/response/ApplePublicKey.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.user.social.apple.response;
+package sopt.org.umbba.external.client.auth.apple.response;
 
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/response/ApplePublicKeys.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/response/ApplePublicKeys.java
similarity index 77%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/apple/response/ApplePublicKeys.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/response/ApplePublicKeys.java
index 0bc79d64..a3938682 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/apple/response/ApplePublicKeys.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/apple/response/ApplePublicKeys.java
@@ -1,11 +1,11 @@
-package sopt.org.umbbaServer.domain.user.social.apple.response;
+package sopt.org.umbba.external.client.auth.apple.response;
 
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.common.exception.ErrorType;
 
 import java.util.List;
 
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/feign/KakaoApiClient.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/KakaoApiClient.java
similarity index 79%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/feign/KakaoApiClient.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/KakaoApiClient.java
index c1521a00..6d7d9769 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/feign/KakaoApiClient.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/KakaoApiClient.java
@@ -1,10 +1,10 @@
-package sopt.org.umbbaServer.domain.user.social.kakao.feign;
+package sopt.org.umbba.external.client.auth.kakao;
 
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.http.HttpHeaders;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestHeader;
-import sopt.org.umbbaServer.domain.user.social.kakao.response.KakaoUserResponse;
+import sopt.org.umbba.external.client.auth.kakao.response.KakaoUserResponse;
 
 @FeignClient(name = "kakaoApiClient", url = "https://kapi.kakao.com")
 public interface KakaoApiClient {
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/feign/KakaoAuthApiClient.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/KakaoAuthApiClient.java
similarity index 84%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/feign/KakaoAuthApiClient.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/KakaoAuthApiClient.java
index b5d277e9..a39f765d 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/feign/KakaoAuthApiClient.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/KakaoAuthApiClient.java
@@ -1,10 +1,10 @@
-package sopt.org.umbbaServer.domain.user.social.kakao.feign;
+package sopt.org.umbba.external.client.auth.kakao;
 
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestParam;
-import sopt.org.umbbaServer.domain.user.social.kakao.response.KakaoAccessTokenResponse;
+import sopt.org.umbba.external.client.auth.kakao.response.KakaoAccessTokenResponse;
 
 @FeignClient(name = "kakaoAuthApiClient", url = "https://kauth.kakao.com")
 public interface KakaoAuthApiClient {
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoAccessTokenResponse.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoAccessTokenResponse.java
similarity index 90%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoAccessTokenResponse.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoAccessTokenResponse.java
index 81aaec52..2305ae7a 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoAccessTokenResponse.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoAccessTokenResponse.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.user.social.kakao.response;
+package sopt.org.umbba.external.client.auth.kakao.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoAccount.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoAccount.java
similarity index 85%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoAccount.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoAccount.java
index 14a37c8f..0a673876 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoAccount.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoAccount.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.user.social.kakao.response;
+package sopt.org.umbba.external.client.auth.kakao.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoUserProfile.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoUserProfile.java
similarity index 86%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoUserProfile.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoUserProfile.java
index 6f7e8aff..5303e0ea 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoUserProfile.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoUserProfile.java
@@ -1,8 +1,9 @@
-package sopt.org.umbbaServer.domain.user.social.kakao.response;
+package sopt.org.umbba.external.client.auth.kakao.response;
+
+import lombok.*;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
-import lombok.*;
 
 @ToString
 @Getter
diff --git a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoUserResponse.java b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoUserResponse.java
similarity index 88%
rename from src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoUserResponse.java
rename to umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoUserResponse.java
index 7c46edbe..858ca383 100644
--- a/src/main/java/sopt/org/umbbaServer/domain/user/social/kakao/response/KakaoUserResponse.java
+++ b/umbba-external/src/main/java/sopt/org/umbba/external/client/auth/kakao/response/KakaoUserResponse.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.domain.user.social.kakao.response;
+package sopt.org.umbba.external.client.auth.kakao.response;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
diff --git a/umbba-notification/build.gradle b/umbba-notification/build.gradle
new file mode 100644
index 00000000..533d885c
--- /dev/null
+++ b/umbba-notification/build.gradle
@@ -0,0 +1,23 @@
+jar { enabled = false }
+
+dependencies {
+    implementation project(":umbba-domain")
+    implementation project(":umbba-common")
+    implementation project(":umbba-external")
+
+    implementation "org.springframework.boot:spring-boot-starter-web"
+
+    // SQS
+    implementation "org.springframework.cloud:spring-cloud-starter-aws:2.2.6.RELEASE"
+    implementation "org.springframework.cloud:spring-cloud-aws-messaging:2.2.6.RELEASE"
+
+    // FCM
+    implementation "com.google.firebase:firebase-admin:9.1.1"
+
+    // Slack Webhook
+    implementation 'com.slack.api:slack-api-client:1.28.0'
+    implementation 'com.google.code.gson:gson:2.10.1'
+    implementation 'com.squareup.okhttp3:okhttp:4.10.0'
+    implementation 'com.slack.api:slack-app-backend:1.28.0'
+    implementation 'com.slack.api:slack-api-model:1.28.0'
+}
\ No newline at end of file
diff --git a/umbba-notification/src/main/java/sopt/org/umbba/notification/NotificationApplication.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/NotificationApplication.java
new file mode 100644
index 00000000..aa42b4e9
--- /dev/null
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/NotificationApplication.java
@@ -0,0 +1,21 @@
+package sopt.org.umbba.notification;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import sopt.org.umbba.common.UmbbaCommonRoot;
+import sopt.org.umbba.domain.UmbbaDomainRoot;
+import sopt.org.umbba.external.UmbbaExternalRoot;
+
+@SpringBootApplication(scanBasePackageClasses = {
+        UmbbaCommonRoot.class,
+        UmbbaDomainRoot.class,
+        UmbbaExternalRoot.class,
+        NotificationApplication.class
+})public class NotificationApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(NotificationApplication.class, args);
+    }
+
+}
\ No newline at end of file
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/FCMConfig.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/fcm/FCMConfig.java
similarity index 93%
rename from src/main/java/sopt/org/umbbaServer/global/config/FCMConfig.java
rename to umbba-notification/src/main/java/sopt/org/umbba/notification/config/fcm/FCMConfig.java
index 806c791e..1bc81e06 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/FCMConfig.java
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/fcm/FCMConfig.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.config;
+package sopt.org.umbba.notification.config.fcm;
 
 import com.google.auth.oauth2.GoogleCredentials;
 import com.google.firebase.FirebaseApp;
@@ -9,9 +9,9 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.io.ClassPathResource;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
-import sopt.org.umbbaServer.global.util.fcm.controller.dto.FCMPushRequestDto;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.common.sqs.dto.FCMPushRequestDto;
 
 import javax.annotation.PostConstruct;
 import java.io.IOException;
diff --git a/src/main/java/sopt/org/umbbaServer/global/config/ScheduleConfig.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/scheduler/ScheduleConfig.java
similarity index 88%
rename from src/main/java/sopt/org/umbbaServer/global/config/ScheduleConfig.java
rename to umbba-notification/src/main/java/sopt/org/umbba/notification/config/scheduler/ScheduleConfig.java
index cff0eb21..f88168ce 100644
--- a/src/main/java/sopt/org/umbbaServer/global/config/ScheduleConfig.java
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/scheduler/ScheduleConfig.java
@@ -1,10 +1,11 @@
-package sopt.org.umbbaServer.global.config;
+package sopt.org.umbba.notification.config.scheduler;
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.scheduling.TaskScheduler;
+import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
-import sopt.org.umbbaServer.global.util.fcm.FCMService;
+import sopt.org.umbba.notification.service.fcm.FCMService;
 
 import java.util.concurrent.ThreadPoolExecutor;
 
@@ -12,6 +13,7 @@
  * 특정 시간대에 알림을 보내주기 위해 Spring이 제공하는 TaskScheduler를 빈으로 등록
  */
 @Configuration
+@EnableScheduling
 public class ScheduleConfig {
 
     private static final int POOL_SIZE = 10;
diff --git a/umbba-notification/src/main/java/sopt/org/umbba/notification/config/sqs/SqsConfig.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/sqs/SqsConfig.java
new file mode 100644
index 00000000..8aa52b01
--- /dev/null
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/sqs/SqsConfig.java
@@ -0,0 +1,34 @@
+package sopt.org.umbba.notification.config.sqs;
+
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.services.sqs.AmazonSQSAsync;
+import com.amazonaws.services.sqs.AmazonSQSAsyncClient;
+import com.amazonaws.services.sqs.AmazonSQSAsyncClientBuilder;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+@Configuration
+public class SqsConfig {
+
+    @Value("${cloud.aws.credentials.accessKey}")
+    private String AWS_ACCESS_KEY;
+
+    @Value("${cloud.aws.credentials.secretKey}")
+    private String AWS_SECRET_KEY;
+
+    @Value("${cloud.aws.region.static}")
+    private String AWS_REGION;
+
+    @Primary
+    @Bean
+    public AmazonSQSAsync amazonSQSAsync() {
+        BasicAWSCredentials basicAWSCredentials = new BasicAWSCredentials(AWS_ACCESS_KEY, AWS_SECRET_KEY);
+        return AmazonSQSAsyncClientBuilder.standard()
+                .withRegion(AWS_REGION)
+                .withCredentials(new AWSStaticCredentialsProvider(basicAWSCredentials))
+                .build();
+    }
+}
diff --git a/umbba-notification/src/main/java/sopt/org/umbba/notification/config/sqs/consumer/SqsConsumer.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/sqs/consumer/SqsConsumer.java
new file mode 100644
index 00000000..c55a1309
--- /dev/null
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/config/sqs/consumer/SqsConsumer.java
@@ -0,0 +1,66 @@
+package sopt.org.umbba.notification.config.sqs.consumer;
+
+import com.amazonaws.services.sqs.AmazonSQS;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.cloud.aws.messaging.listener.Acknowledgment;
+import org.springframework.cloud.aws.messaging.listener.SqsMessageDeletionPolicy;
+import org.springframework.cloud.aws.messaging.listener.annotation.SqsListener;
+import org.springframework.messaging.handler.annotation.Headers;
+import org.springframework.messaging.handler.annotation.Payload;
+import org.springframework.stereotype.Component;
+import sopt.org.umbba.common.sqs.MessageType;
+import sopt.org.umbba.common.sqs.MessageUtils;
+import sopt.org.umbba.common.sqs.dto.FCMPushRequestDto;
+import sopt.org.umbba.common.sqs.dto.FirebaseDto;
+import sopt.org.umbba.common.sqs.dto.SlackDto;
+import sopt.org.umbba.notification.service.fcm.FCMService;
+import sopt.org.umbba.notification.service.slack.SlackApi;
+
+import javax.websocket.SendResult;
+import java.util.Map;
+
+/**
+ * 큐 대기열에 있는 메시지 목록을 조회하여 받아오는(pull) 역할
+ *
+ */
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class SqsConsumer {
+
+    private final ObjectMapper objectMapper;
+    private final FCMService fcmService;
+    private final SlackApi slackApi;
+    private static final String SQS_CONSUME_LOG_MESSAGE =
+            "====> [SQS Queue Response]\n" + "info: %s\n" + "header: %s\n";
+
+
+    // SQS로부터 메시지를 받는 Listener | 메시지를 받은 이후의 삭제 정책을 NEVER로 지정
+    // -> 절대 삭제 요청을 보내지 않고, ack 메서드를 호출할 때 삭제 요청을 보냄
+    @SqsListener(value = "${cloud.aws.sqs.notification.name}", deletionPolicy = SqsMessageDeletionPolicy.NEVER)
+    public void consume(@Payload String payload, @Headers Map<String, String> headers, Acknowledgment ack) {
+        try {
+            log.info(MessageUtils.generate(SQS_CONSUME_LOG_MESSAGE, payload, headers));
+
+            switch (headers.get(MessageType.MESSAGE_TYPE_HEADER)) {
+
+                case MessageType.FIREBASE:
+                    FCMPushRequestDto request = objectMapper.readValue(payload, FCMPushRequestDto.class);
+                    fcmService.pushAlarm(request);  // TODO userId 를 넘겨주는 방식 대신 어떻게 유저 식별할지?
+                    break;
+
+                case MessageType.SLACK:
+                    SlackDto slackDto = objectMapper.readValue(payload, SlackDto.class);
+                    slackApi.sendAlert(slackDto.getError(), slackDto.getRequestMethod(), slackDto.getRequestURI());
+                    break;
+            }
+        } catch (Exception e) {
+            log.error(e.getMessage(), e);
+        }
+
+        ack.acknowledge();
+    }
+
+}
\ No newline at end of file
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/FCMController.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/FCMController.java
similarity index 78%
rename from src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/FCMController.java
rename to umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/FCMController.java
index cbc994cb..5d65b1a9 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/FCMController.java
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/FCMController.java
@@ -1,14 +1,13 @@
-package sopt.org.umbbaServer.global.util.fcm.controller;
+package sopt.org.umbba.notification.service.fcm;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
-import sopt.org.umbbaServer.global.common.dto.ApiResponse;
-import sopt.org.umbbaServer.global.config.jwt.JwtProvider;
-import sopt.org.umbbaServer.global.exception.SuccessType;
-import sopt.org.umbbaServer.global.util.fcm.FCMScheduler;
-import sopt.org.umbbaServer.global.util.fcm.FCMService;
-import sopt.org.umbbaServer.global.util.fcm.controller.dto.FCMPushRequestDto;
+import sopt.org.umbba.common.exception.SuccessType;
+import sopt.org.umbba.common.exception.dto.ApiResponse;
+import sopt.org.umbba.common.sqs.dto.FCMPushRequestDto;
+import sopt.org.umbba.notification.service.fcm.FCMService;
+import sopt.org.umbba.notification.service.scheduler.FCMScheduler;
 
 import java.io.IOException;
 import java.security.Principal;
@@ -49,7 +48,7 @@ public ApiResponse sendTopicScheduledTest() {
     @ResponseStatus(HttpStatus.OK)
     public ApiResponse sendNotificationByToken(@RequestBody FCMPushRequestDto request, Principal principal) throws IOException {
 
-        return ApiResponse.success(SuccessType.PUSH_ALARM_SUCCESS, fcmService.pushAlarm(request, JwtProvider.getUserFromPrincial(principal)));
+        return ApiResponse.success(SuccessType.PUSH_ALARM_SUCCESS, fcmService.pushAlarm(request));
     }
 
     /**
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/fcm/FCMService.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/FCMService.java
similarity index 91%
rename from src/main/java/sopt/org/umbbaServer/global/util/fcm/FCMService.java
rename to umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/FCMService.java
index 755966ee..7971f0ae 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/fcm/FCMService.java
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/FCMService.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.util.fcm;
+package sopt.org.umbba.notification.service.fcm;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -19,17 +19,17 @@
 import org.springframework.transaction.TransactionStatus;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.transaction.support.DefaultTransactionDefinition;
-import sopt.org.umbbaServer.domain.parentchild.dao.ParentchildDao;
-import sopt.org.umbbaServer.domain.parentchild.model.Parentchild;
-import sopt.org.umbbaServer.domain.parentchild.repository.ParentchildRepository;
-import sopt.org.umbbaServer.domain.qna.model.QnA;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.repository.UserRepository;
-import sopt.org.umbbaServer.domain.user.social.SocialPlatform;
-import sopt.org.umbbaServer.global.exception.CustomException;
-import sopt.org.umbbaServer.global.exception.ErrorType;
-import sopt.org.umbbaServer.global.util.fcm.controller.dto.FCMMessage;
-import sopt.org.umbbaServer.global.util.fcm.controller.dto.FCMPushRequestDto;
+import sopt.org.umbba.common.exception.ErrorType;
+import sopt.org.umbba.common.exception.model.CustomException;
+import sopt.org.umbba.domain.domain.parentchild.Parentchild;
+import sopt.org.umbba.domain.domain.parentchild.dao.ParentchildDao;
+import sopt.org.umbba.domain.domain.parentchild.repository.ParentchildRepository;
+import sopt.org.umbba.domain.domain.qna.QnA;
+import sopt.org.umbba.domain.domain.user.SocialPlatform;
+import sopt.org.umbba.domain.domain.user.User;
+import sopt.org.umbba.domain.domain.user.repository.UserRepository;
+import sopt.org.umbba.notification.service.fcm.dto.FCMMessage;
+import sopt.org.umbba.common.sqs.dto.FCMPushRequestDto;
 
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
@@ -39,6 +39,9 @@
 import java.util.List;
 import java.util.concurrent.ScheduledFuture;
 
+/**
+ * 서버에서 파이어베이스로 전송이 잘 이루어지는지 테스트하기 위한 컨트롤러
+ */
 @Slf4j
 @Service
 @RequiredArgsConstructor
@@ -121,13 +124,7 @@ String makeMessage(FCMPushRequestDto request, Long userId) throws FirebaseMessag
 
     // FCM Service에 메시지를 수신하는 함수 (헤더와 바디 직접 만들기) -> 상대 답변 알람 전송에 사용
     @Transactional
-    public String pushAlarm(FCMPushRequestDto request, Long userId) throws IOException {
-
-        // TODO 같은 Parentchild ID를 가진 User를 찾은 후, 이들에 대한 토큰 리스트로 동일한 알림 메시지 전송하도록
-        User user = userRepository.findById(userId).orElseThrow(
-                () -> new CustomException(ErrorType.INVALID_USER)
-        );
-        user.updateFcmToken(request.getTargetToken());
+    public String pushAlarm(FCMPushRequestDto request) throws IOException {
 
         String message = makeMessage(request);
         sendPushMessage(message);
@@ -235,7 +232,6 @@ public void schedulePushAlarm(String cronExpression, Long parentchildId) {
                         QnA todayQnA = parentchild.getQnaList().get(parentchild.getCount() - 1);
 //                        em.close();
 
-
                         log.info("\n  Current QnA: {}  \n  Today QnA: {}", currentQnA.getId(), todayQnA.getId());
                         if (todayQnA == null) {
                             log.error("{}번째 Parentchild의 QnaList가 존재하지 않음!", parentchild.getId());
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/FCMMessage.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/dto/FCMMessage.java
similarity index 97%
rename from src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/FCMMessage.java
rename to umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/dto/FCMMessage.java
index e363ef28..d7ebeafa 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/fcm/controller/dto/FCMMessage.java
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/fcm/dto/FCMMessage.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.util.fcm.controller.dto;
+package sopt.org.umbba.notification.service.fcm.dto;
 
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/fcm/FCMScheduler.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/scheduler/FCMScheduler.java
similarity index 78%
rename from src/main/java/sopt/org/umbbaServer/global/util/fcm/FCMScheduler.java
rename to umbba-notification/src/main/java/sopt/org/umbba/notification/service/scheduler/FCMScheduler.java
index 57083e6f..a03be6bb 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/fcm/FCMScheduler.java
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/scheduler/FCMScheduler.java
@@ -1,17 +1,16 @@
-package sopt.org.umbbaServer.global.util.fcm;
+package sopt.org.umbba.notification.service.scheduler;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
-import org.springframework.web.bind.annotation.RestController;
-import sopt.org.umbbaServer.domain.parentchild.dao.ParentchildDao;
-import sopt.org.umbbaServer.domain.parentchild.repository.ParentchildRepository;
-import sopt.org.umbbaServer.domain.user.model.User;
-import sopt.org.umbbaServer.domain.user.repository.UserRepository;
-import sopt.org.umbbaServer.domain.user.social.SocialPlatform;
-import sopt.org.umbbaServer.global.util.fcm.controller.dto.FCMPushRequestDto;
+
+import sopt.org.umbba.domain.domain.parentchild.dao.ParentchildDao;
+import sopt.org.umbba.domain.domain.parentchild.repository.ParentchildRepository;
+import sopt.org.umbba.domain.domain.user.SocialPlatform;
+import sopt.org.umbba.domain.domain.user.User;
+import sopt.org.umbba.domain.domain.user.repository.UserRepository;
+import sopt.org.umbba.notification.service.fcm.FCMService;
 
 import java.util.List;
 
diff --git a/src/main/java/sopt/org/umbbaServer/global/util/slack/SlackApi.java b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/slack/SlackApi.java
similarity index 87%
rename from src/main/java/sopt/org/umbbaServer/global/util/slack/SlackApi.java
rename to umbba-notification/src/main/java/sopt/org/umbba/notification/service/slack/SlackApi.java
index 0030e4f8..22249112 100644
--- a/src/main/java/sopt/org/umbbaServer/global/util/slack/SlackApi.java
+++ b/umbba-notification/src/main/java/sopt/org/umbba/notification/service/slack/SlackApi.java
@@ -1,4 +1,4 @@
-package sopt.org.umbbaServer.global.util.slack;
+package sopt.org.umbba.notification.service.slack;
 
 import com.slack.api.Slack;
 import com.slack.api.model.block.Blocks;
@@ -32,7 +32,7 @@ public class SlackApi {
 
 
     // Slack으로 알림 보내기
-    public void sendAlert(Exception error, HttpServletRequest request) throws IOException {
+    public void sendAlert(Exception error, String requestMethod, String requestURI) throws IOException {
 
         // 현재 프로파일이 특정 프로파일이 아니면 알림보내지 않기
 //        if (!env.getActiveProfiles()[0].equals("set1")) {
@@ -40,7 +40,7 @@ public void sendAlert(Exception error, HttpServletRequest request) throws IOExce
 //        }
 
         // 메시지 내용인 LayoutBlock List 생성
-        List<LayoutBlock> layoutBlocks = generateLayoutBlock(error, request);
+        List<LayoutBlock> layoutBlocks = generateLayoutBlock(error, requestMethod, requestURI);
 
         // 슬랙의 send API과 webhookURL을 통해 생성한 메시지 내용 전송
         Slack.getInstance().send(webhookUrl, WebhookPayloads
@@ -54,13 +54,13 @@ public void sendAlert(Exception error, HttpServletRequest request) throws IOExce
     }
 
     // 전체 메시지가 담긴 LayoutBlock 생성
-    private List<LayoutBlock> generateLayoutBlock(Exception error, HttpServletRequest request) {
+    private List<LayoutBlock> generateLayoutBlock(Exception error, String requestMethod, String requestURI) {
         return Blocks.asBlocks(
                 getHeader("서버 측 오류로 예상되는 예외 상황이 발생하였습니다."),
                 Blocks.divider(),
                 getSection(generateErrorMessage(error)),
                 Blocks.divider(),
-                getSection(generateErrorPointMessage(request)),
+                getSection(generateErrorPointMessage(requestMethod, requestURI)),
                 Blocks.divider(),
                 // 이슈 생성을 위해 프로젝트의 Issue URL을 입력하여 바로가기 링크를 생성
                 getSection("<https://github.com/Team-Umbba/Umbba-Server/issues|이슈 생성하러 가기>")
@@ -77,11 +77,11 @@ private String generateErrorMessage(Exception error) {
     }
 
     // HttpServletRequest를 사용하여 예외발생 요청에 대한 정보 메시지 생성
-    private String generateErrorPointMessage(HttpServletRequest request) {
+    private String generateErrorPointMessage(String requestMethod, String requestURI) {
         sb.setLength(0);
         sb.append("*[🧾세부정보]*" + NEW_LINE);
-        sb.append("Request URL : " + request.getRequestURL().toString() + NEW_LINE);
-        sb.append("Request Method : " + request.getMethod() + NEW_LINE);
+        sb.append("Request URL : " + requestURI + NEW_LINE);
+        sb.append("Request Method : " + requestMethod + NEW_LINE);
         sb.append("Request Time : " + new Date() + NEW_LINE);
 
         return sb.toString();
diff --git a/umbba-notification/src/main/resources/application.yaml b/umbba-notification/src/main/resources/application.yaml
new file mode 100644
index 00000000..93c96e4d
--- /dev/null
+++ b/umbba-notification/src/main/resources/application.yaml
@@ -0,0 +1,81 @@
+cloud:
+  aws:
+    credentials:
+      accessKey: ${cloud-access}
+      secretKey: ${cloud-secret}
+    region:
+      static: ${cloud-region}
+    s3:
+      bucket: ${bucket-name}
+    stack:
+      auto: false
+    sqs:
+      notification:
+        name: ${sqs-notification-name}
+        url: ${sqs-notification-url}
+      #api:
+      #  name: ${sqs-api-name}
+      #  url: ${sqs-api-url}
+
+
+spring:
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: ${db-url}
+    username: ${db-user}
+    password: ${db-pwd}
+    hikari:
+      pool-name: Hikari 커넥션 풀  # Pool
+      connection-timeout: 30000 # 30초(default: 30초)
+      maximum-pool-size: 10  # default: 10개
+      max-lifetime: 600000   # 10분(default: 30분)
+      leak-detection-threshold: 2000  # default: 0(이용X)
+  jpa:
+    show-sql: false
+    hibernate:
+      ddl-auto: update
+      ejb:
+        naming_strategy: org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy
+    properties:
+      hibernate:
+        format_sql: false
+
+kakao:
+  client-id: ${kakao-id}
+  authorization-grant-type: authorization_code
+  redirect-uri: ${kakao-redirect}
+
+apple:
+  iss: ${apple-iss}
+  client-id: ${apple-id}
+#  nonce: ${apple-nonce}
+
+jwt:
+  secret: ${jwt-secret}
+
+slack:
+  webhook:
+    url: ${slack-url}
+
+fcm:
+  key:
+    path: ${fcm-json-path}
+    scope: ${fcm-scope}
+  #    firebase-create-scoped: "https://www.googleapis.com/auth/firebase.messaging"
+  api:
+    url: ${fcm-api-url}
+  topic:
+    "qna_notification"
+
+logging:
+  level:
+    org:
+      hibernate:
+        type:
+          descriptor:
+            sql: debug
+    com.zaxxer.hikari.pool.HikariPool: debug
+
+
+server:
+  port: 9092
\ No newline at end of file