diff --git a/index.js b/index.js
index f98cb2d..8c0133f 100644
--- a/index.js
+++ b/index.js
@@ -1,21 +1,38 @@
+const dotenv = require('dotenv')
+const path = require('path')
 const Logger = require('bunyan')
+
 const { name, version } = require('./package.json')
-const server = require('./src/server')
+const { createBotAdapter } = require('./src/bot-adapter')
+const { createBot } = require('./src/bot')
+const { createServer } = require('./src/server')
+const { createStorage } = require('./src/storage')
 
 const appInfo = `${name}@${version}`
 const log = new Logger({
   name: appInfo
 })
-
 log.info('[STARTUP]', appInfo)
 
-server.start({
-  appInfo,
+/* load .env file before instanciating dependent objects (do NOT move) */
+dotenv.config({ path: path.join(__dirname, '.env') })
+log.info('[STARTUP] .env file read')
+
+const adapter = createBotAdapter(log)
+const storage = createStorage(log)
+const bot = createBot(storage, log)
+
+createServer({
   log,
-  onMessage: () => {
-    log.info('TODO onMessage')
+  appInfo,
+  onMessage: async (req, res) => {
+    adapter.processActivity(req, res, async turnContext => {
+      // route to main dialog.
+      await bot.run(turnContext)
+    })
   },
-  onNotify: () => {
+  onNotify: async input => {
     log.info('TODO onNotify')
+    return {}
   }
 })
diff --git a/package-lock.json b/package-lock.json
index 925cbe4..6d788d5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,21 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@azure/ms-rest-js": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/@azure/ms-rest-js/-/ms-rest-js-1.9.1.tgz",
+      "integrity": "sha512-F1crHKhmsvFLM9fsnDyCGFd2E2KR9GEZm5oBVV5D5k2EBQ7u7idtSJlSF6RDLDIrGWtc4NnFdYwsoiW8NLlBQg==",
+      "requires": {
+        "@types/tunnel": "0.0.0",
+        "axios": "^0.21.1",
+        "form-data": "^2.3.2",
+        "tough-cookie": "^2.4.3",
+        "tslib": "^1.9.2",
+        "tunnel": "0.0.6",
+        "uuid": "^3.2.1",
+        "xml2js": "^0.4.19"
+      }
+    },
     "@babel/code-frame": {
       "version": "7.12.11",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.12.11.tgz",
@@ -142,11 +157,18 @@
       "integrity": "sha1-7ihweulOEdK4J7y+UnC86n8+ce4=",
       "dev": true
     },
+    "@types/jsonwebtoken": {
+      "version": "7.2.8",
+      "resolved": "https://registry.npmjs.org/@types/jsonwebtoken/-/jsonwebtoken-7.2.8.tgz",
+      "integrity": "sha512-XENN3YzEB8D6TiUww0O8SRznzy1v+77lH7UmuN54xq/IHIsyWjWOzZuFFTtoiRuaE782uAoRwBe/wwow+vQXZw==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/node": {
       "version": "14.14.22",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-      "integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
-      "dev": true
+      "integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw=="
     },
     "@types/restify": {
       "version": "8.4.2",
@@ -169,6 +191,22 @@
         "@types/node": "*"
       }
     },
+    "@types/tunnel": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/@types/tunnel/-/tunnel-0.0.0.tgz",
+      "integrity": "sha512-FGDp0iBRiBdPjOgjJmn1NH0KDLN+Z8fRmo+9J7XGBhubq1DPrGrbmG4UTlGzrpbCpesMqD0sWkzi27EYkOMHyg==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "@types/ws": {
+      "version": "6.0.4",
+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-6.0.4.tgz",
+      "integrity": "sha512-PpPrX7SZW9re6+Ha8ojZG4Se8AZXgf0GK6zmfqEuCsY49LFDNXO3SByp44X3dFEqtB73lkCDAdUazhAjVPiNwg==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@typescript-eslint/eslint-plugin": {
       "version": "4.14.1",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.14.1.tgz",
@@ -253,11 +291,33 @@
       "integrity": "sha512-K0Ptm/47OKfQRpNQ2J/oIN/3QYiK6FwW+eJbILhsdxh2WTLdl+30o8aGdTbm5JbffpFFAg/g+zi1E+jvJha5ng==",
       "dev": true
     },
+    "adal-node": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/adal-node/-/adal-node-0.2.1.tgz",
+      "integrity": "sha512-C/oasZuTy0NIqh5wPWjG/09XaG+zS7elC8upf1ZVExt9lSRncme4Ejbx8CKYk+wsGgj609y84txtRAXQVvqApg==",
+      "requires": {
+        "@types/node": "^8.0.47",
+        "async": "^2.6.3",
+        "date-utils": "*",
+        "jws": "3.x.x",
+        "request": "^2.88.0",
+        "underscore": ">= 1.3.1",
+        "uuid": "^3.1.0",
+        "xmldom": ">= 0.1.x",
+        "xpath.js": "~1.1.0"
+      },
+      "dependencies": {
+        "@types/node": {
+          "version": "8.10.66",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-8.10.66.tgz",
+          "integrity": "sha512-tktOkFUA4kXx2hhhrB8bIFb5TbwzS4uOhKEmwiD+NoiL0qtP2OQ9mFldbgD4dV1djrlBYP6eBuQZiWjuHUpqFw=="
+        }
+      }
+    },
     "ajv": {
       "version": "6.12.6",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
       "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
-      "dev": true,
       "requires": {
         "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
@@ -333,6 +393,15 @@
         "safer-buffer": "~2.1.0"
       }
     },
+    "assert": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/assert/-/assert-1.5.0.tgz",
+      "integrity": "sha512-EDsgawzwoun2CZkCgtxJbv392v4nbk9XDD06zI+kQYoBM/3RBWLlEyJARDOmhAAosBjWACEkKL6S+lIZtcAubA==",
+      "requires": {
+        "object-assign": "^4.1.1",
+        "util": "0.10.3"
+      }
+    },
     "assert-plus": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
@@ -344,11 +413,47 @@
       "integrity": "sha512-Z7tMw1ytTXt5jqMcOP+OQteU1VuNK9Y02uuJtKQ1Sv69jXQKKg5cibLwGJow8yzZP+eAc18EmLGPal0bp36rvQ==",
       "dev": true
     },
+    "async": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "requires": {
+        "lodash": "^4.17.14"
+      }
+    },
+    "asynckit": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
+    },
+    "aws-sign2": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg="
+    },
+    "aws4": {
+      "version": "1.11.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.11.0.tgz",
+      "integrity": "sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA=="
+    },
+    "axios": {
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.21.1.tgz",
+      "integrity": "sha512-dKQiRHxGD9PPRIUNIWvZhPTPpl1rf/OxTYKsqKUDjBwYylTvV7SjSHJb9ratfyzM6wCdLCOYLzs73qpg5c4iGA==",
+      "requires": {
+        "follow-redirects": "^1.10.0"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
+    "base64url": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/base64url/-/base64url-3.0.1.tgz",
+      "integrity": "sha512-ir1UPr3dkwexU7FdV8qBBbNDRUhMmIekYMFZfi+C/sLNnRESKPl23nB9b2pltqfOQNnGzsDdId90AEtG5tCx4A=="
+    },
     "bcrypt-pbkdf": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
@@ -357,6 +462,69 @@
         "tweetnacl": "^0.14.3"
       }
     },
+    "botbuilder": {
+      "version": "4.11.1",
+      "resolved": "https://registry.npmjs.org/botbuilder/-/botbuilder-4.11.1.tgz",
+      "integrity": "sha512-6VtAtJzkAuuBXz2TwPT49yNeLkhpjfGouys24qPNZSBdl5UWkhniKo1t3DdIU8wPjlyGfqxmW8DQfUmfGI9elQ==",
+      "requires": {
+        "@azure/ms-rest-js": "1.9.1",
+        "@types/node": "^10.17.27",
+        "axios": "^0.21.1",
+        "botbuilder-core": "4.11.1",
+        "botframework-connector": "4.11.1",
+        "botframework-streaming": "4.11.1",
+        "filenamify": "^4.1.0",
+        "fs-extra": "^7.0.1",
+        "moment-timezone": "^0.5.28"
+      },
+      "dependencies": {
+        "@types/node": {
+          "version": "10.17.51",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-10.17.51.tgz",
+          "integrity": "sha512-KANw+MkL626tq90l++hGelbl67irOJzGhUJk6a1Bt8QHOeh9tztJx+L0AqttraWKinmZn7Qi5lJZJzx45Gq0dg=="
+        }
+      }
+    },
+    "botbuilder-core": {
+      "version": "4.11.1",
+      "resolved": "https://registry.npmjs.org/botbuilder-core/-/botbuilder-core-4.11.1.tgz",
+      "integrity": "sha512-Vtv2cUSXjVHZ3x081KFbqb/CpWfU24k2x89AAgsLWbTUytNW0QTRNgByjdznNl4CqV3b98mI6qJsk/fqFGnq4w==",
+      "requires": {
+        "assert": "^1.4.1",
+        "botframework-connector": "4.11.1",
+        "botframework-schema": "4.11.1"
+      }
+    },
+    "botframework-connector": {
+      "version": "4.11.1",
+      "resolved": "https://registry.npmjs.org/botframework-connector/-/botframework-connector-4.11.1.tgz",
+      "integrity": "sha512-oaQHGoF35kjTgczUM8MhJu9A4PWuUYVSvM6w0KKvVRL0You9ivHa0FT1JrUodxzLCY0ZWNVWdYijstXEq8feSQ==",
+      "requires": {
+        "@azure/ms-rest-js": "1.9.1",
+        "@types/jsonwebtoken": "7.2.8",
+        "adal-node": "0.2.1",
+        "base64url": "^3.0.0",
+        "botframework-schema": "4.11.1",
+        "cross-fetch": "^3.0.5",
+        "jsonwebtoken": "8.0.1",
+        "rsa-pem-from-mod-exp": "^0.8.4"
+      }
+    },
+    "botframework-schema": {
+      "version": "4.11.1",
+      "resolved": "https://registry.npmjs.org/botframework-schema/-/botframework-schema-4.11.1.tgz",
+      "integrity": "sha512-RDDEuh1yHnCqVppUIOh6pv51OQ7mN7wTPiBSvhIjhLW6zSJxDn7ho9QbJl1KJRnpQj4qnNvh1ZlrqTiL9QBIjA=="
+    },
+    "botframework-streaming": {
+      "version": "4.11.1",
+      "resolved": "https://registry.npmjs.org/botframework-streaming/-/botframework-streaming-4.11.1.tgz",
+      "integrity": "sha512-XZHQrsClzLzIIqWiv1FOrZri7vW21+xfIgrl4pueLmXZT8YM2FytW2EwnAyYIgooEk1CYbLZ/wmmgjxClLSATA==",
+      "requires": {
+        "@types/ws": "^6.0.3",
+        "uuid": "^3.4.0",
+        "ws": "^7.1.2"
+      }
+    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -375,6 +543,11 @@
         "fill-range": "^7.0.1"
       }
     },
+    "buffer-equal-constant-time": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
+      "integrity": "sha1-+OcRMvf/5uAaXJaXpMbz5I1cyBk="
+    },
     "bunyan": {
       "version": "1.8.15",
       "resolved": "https://registry.npmjs.org/bunyan/-/bunyan-1.8.15.tgz",
@@ -402,6 +575,11 @@
       "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
       "dev": true
     },
+    "caseless": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
+      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
+    },
     "chalk": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
@@ -468,6 +646,14 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
+    "combined-stream": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
+      "requires": {
+        "delayed-stream": "~1.0.0"
+      }
+    },
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -484,6 +670,14 @@
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
     },
+    "cross-fetch": {
+      "version": "3.0.6",
+      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-3.0.6.tgz",
+      "integrity": "sha512-KBPUbqgFjzWlVcURG+Svp9TlhA5uliYtiNx/0r8nv0pdypeQCRJ9IaSIc3q/x3q8t3F75cHuwxVql1HFGHCNJQ==",
+      "requires": {
+        "node-fetch": "2.6.1"
+      }
+    },
     "cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
@@ -529,6 +723,11 @@
         "assert-plus": "^1.0.0"
       }
     },
+    "date-utils": {
+      "version": "1.2.21",
+      "resolved": "https://registry.npmjs.org/date-utils/-/date-utils-1.2.21.tgz",
+      "integrity": "sha1-YfsWzcEnSzyayq/+n8ad+HIKK2Q="
+    },
     "debug": {
       "version": "4.3.1",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
@@ -552,6 +751,11 @@
         "object-keys": "^1.0.12"
       }
     },
+    "delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
+    },
     "depd": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
@@ -585,6 +789,11 @@
         "esutils": "^2.0.2"
       }
     },
+    "dotenv": {
+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
+      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
+    },
     "dtrace-provider": {
       "version": "0.8.8",
       "resolved": "https://registry.npmjs.org/dtrace-provider/-/dtrace-provider-0.8.8.tgz",
@@ -603,6 +812,14 @@
         "safer-buffer": "^2.1.0"
       }
     },
+    "ecdsa-sig-formatter": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
+      "integrity": "sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -683,8 +900,7 @@
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
-      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
-      "dev": true
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
     },
     "eslint": {
       "version": "7.18.0",
@@ -1002,6 +1218,11 @@
         "assert-plus": "^1.0.0"
       }
     },
+    "extend": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g=="
+    },
     "extsprintf": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
@@ -1015,8 +1236,7 @@
     "fast-deep-equal": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
-      "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
-      "dev": true
+      "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="
     },
     "fast-glob": {
       "version": "3.2.5",
@@ -1035,8 +1255,7 @@
     "fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
-      "integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==",
-      "dev": true
+      "integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw=="
     },
     "fast-levenshtein": {
       "version": "2.0.6",
@@ -1062,6 +1281,21 @@
         "flat-cache": "^3.0.4"
       }
     },
+    "filename-reserved-regex": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/filename-reserved-regex/-/filename-reserved-regex-2.0.0.tgz",
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+    "rsa-pem-from-mod-exp": {
+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/rsa-pem-from-mod-exp/-/rsa-pem-from-mod-exp-0.8.4.tgz",
+      "integrity": "sha1-NipCxtMEBW1JOz8SvOq7LGV2ptQ="
+    },
     "run-parallel": {
       "version": "1.1.10",
       "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.1.10.tgz",
@@ -2063,6 +2536,11 @@
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
+    "sax": {
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
+      "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw=="
+    },
     "select-hose": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/select-hose/-/select-hose-2.0.0.tgz",
@@ -2344,6 +2822,14 @@
       "integrity": "sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==",
       "dev": true
     },
+    "strip-outer": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/strip-outer/-/strip-outer-1.0.1.tgz",
+      "integrity": "sha512-k55yxKHwaXnpYGsOzg4Vl8+tDrWylxDEpknGjhTiZB8dFRU5rTo9CAzeycivxV3s+zlTKwrs6WxMxR95n26kwg==",
+      "requires": {
+        "escape-string-regexp": "^1.0.2"
+      }
+    },
     "supports-color": {
       "version": "5.5.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
@@ -2400,6 +2886,23 @@
         "is-number": "^7.0.0"
       }
     },
+    "tough-cookie": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.5.0.tgz",
+      "integrity": "sha512-nlLsUzgm1kfLXSXfRZMc1KLAugd4hqJHDTvc2hDIwS3mZAfMEuMbc03SujMF+GEcpaX/qboeycw6iO8JwVv2+g==",
+      "requires": {
+        "psl": "^1.1.28",
+        "punycode": "^2.1.1"
+      }
+    },
+    "trim-repeated": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/trim-repeated/-/trim-repeated-1.0.0.tgz",
+      "integrity": "sha1-42RqLqTokTEr9+rObPsFOAvAHCE=",
+      "requires": {
+        "escape-string-regexp": "^1.0.2"
+      }
+    },
     "tsconfig-paths": {
       "version": "3.9.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.9.0.tgz",
@@ -2415,8 +2918,7 @@
     "tslib": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
-      "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
-      "dev": true
+      "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
     },
     "tsutils": {
       "version": "3.20.0",
@@ -2427,6 +2929,19 @@
         "tslib": "^1.8.1"
       }
     },
+    "tunnel": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/tunnel/-/tunnel-0.0.6.tgz",
+      "integrity": "sha512-1h/Lnq9yajKY2PEbBadPXj3VxsDDu844OnaAo52UVmIzIvwwtBPIuNvkjuzBlTWpfJyUbG3ez0KSBibQkj4ojg=="
+    },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "tweetnacl": {
       "version": "0.14.5",
       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
@@ -2447,15 +2962,39 @@
       "integrity": "sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==",
       "dev": true
     },
+    "underscore": {
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.12.0.tgz",
+      "integrity": "sha512-21rQzss/XPMjolTiIezSu3JAjgagXKROtNrYFEOWK109qY1Uv2tVjPTZ1ci2HgvQDA16gHYSthQIJfB+XId/rQ=="
+    },
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="
+    },
     "uri-js": {
       "version": "4.4.1",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
       "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
-      "dev": true,
       "requires": {
         "punycode": "^2.1.0"
       }
     },
+    "util": {
+      "version": "0.10.3",
+      "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
+      "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
+      "requires": {
+        "inherits": "2.0.1"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.1.tgz",
+          "integrity": "sha1-sX0I0ya0Qj5Wjv9xn5GwscvfafE="
+        }
+      }
+    },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -2528,6 +3067,40 @@
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
+    "ws": {
+      "version": "7.4.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.2.tgz",
+      "integrity": "sha512-T4tewALS3+qsrpGI/8dqNMLIVdq/g/85U98HPMa6F0m6xTbvhXU6RCQLqPH3+SlomNV/LdY6RXEbBpMH6EOJnA=="
+    },
+    "xml2js": {
+      "version": "0.4.23",
+      "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.23.tgz",
+      "integrity": "sha512-ySPiMjM0+pLDftHgXY4By0uswI3SPKLDw/i3UXbnO8M/p28zqexCUoPmQFrYD+/1BzhGJSs2i1ERWKJAtiLrug==",
+      "requires": {
+        "sax": ">=0.6.0",
+        "xmlbuilder": "~11.0.0"
+      }
+    },
+    "xmlbuilder": {
+      "version": "11.0.1",
+      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-11.0.1.tgz",
+      "integrity": "sha512-fDlsI/kFEx7gLvbecc0/ohLG50fugQp8ryHzMTuW9vSa1GJ0XYWKnhsUx7oie3G98+r56aTQIUB4kht42R3JvA=="
+    },
+    "xmldom": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/xmldom/-/xmldom-0.4.0.tgz",
+      "integrity": "sha512-2E93k08T30Ugs+34HBSTQLVtpi6mCddaY8uO+pMNk1pqSjV5vElzn4mmh6KLxN3hki8rNcHSYzILoh3TEWORvA=="
+    },
+    "xpath.js": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/xpath.js/-/xpath.js-1.1.0.tgz",
+      "integrity": "sha512-jg+qkfS4K8E7965sqaUl8mRngXiKb3WZGfONgE18pr03FUQiuSV6G+Ej4tS55B+rIQSFEIw3phdVAQ4pPqNWfQ=="
+    },
+    "xtend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
+    },
     "yallist": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
diff --git a/package.json b/package.json
index 20d1901..b4e9010 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,9 @@
     "eslint-plugin-promise": "^4.2.1"
   },
   "dependencies": {
+    "botbuilder": "^4.11.1",
     "bunyan": "^1.8.15",
+    "dotenv": "^8.2.0",
     "restify": "^8.5.1"
   }
 }
diff --git a/src/bot-adapter.js b/src/bot-adapter.js
new file mode 100644
index 0000000..c195d29
--- /dev/null
+++ b/src/bot-adapter.js
@@ -0,0 +1,28 @@
+const { BotFrameworkAdapter } = require('botbuilder')
+
+const createBotAdapter = log => {
+  const runningLocally = process.env.LOCAL || false
+
+  const adapter = new BotFrameworkAdapter({
+    appId: runningLocally ? null : process.env.MicrosoftAppId,
+    appPassword: runningLocally ? null : process.env.MicrosoftAppPassword
+  })
+
+  adapter.onTurnError = async (context, error) => {
+    log.error(error, '[onTurnError] unhandled erro')
+
+    await context.sendTraceActivity(
+      'OnTurnError Trace',
+      `${error}`,
+      'https://www.botframework.com/schemas/error',
+      'TurnError'
+    )
+
+    await context.sendActivity('The bot encountered an error or bug.')
+  }
+
+  log.info(`[STARTUP] created bot adapter (runningLocally: ${runningLocally})`)
+  return adapter
+}
+
+module.exports = { createBotAdapter }
diff --git a/src/bot.js b/src/bot.js
new file mode 100644
index 0000000..346c83e
--- /dev/null
+++ b/src/bot.js
@@ -0,0 +1,46 @@
+const { ActivityHandler } = require('botbuilder')
+
+const createBot = (conversationReferences, log) => {
+  const bot = new ActivityHandler()
+
+  /**
+   * A party (including the bot) joins or leaves a conversation
+   */
+  bot.onConversationUpdate(async (context, next) => {
+    await context.sendTraceActivity('onConversationUpdate', context.activity)
+    conversationReferences.add(context.activity)
+    await next()
+  })
+
+  /**
+   * Members joined the conversation (including the bot)
+   * @note As observed, seems `onConversationUpdate()` is called first with the same info.
+   */
+  bot.onMembersAdded(async (context, next) => {
+    const membersAdded = context.activity.membersAdded
+    for (let cnt = 0; cnt < membersAdded.length; cnt++) {
+      if (membersAdded[cnt].id !== context.activity.recipient.id) {
+        const welcomeMessage =
+          'Welcome to the Proactive Bot sample.  Navigate to http://localhost:3978/api/notify to proactively message everyone who has previously messaged this bot.'
+        await context.sendActivity(welcomeMessage)
+      }
+    }
+    await next()
+  })
+
+  /**
+   * Main handler: Message activity received
+   */
+  bot.onMessage(async (context, next) => {
+    conversationReferences.add(context.activity)
+
+    // Echo back what the user said
+    await context.sendActivity(`You sent '${context.activity.text}'`)
+    await next()
+  })
+
+  log.info('[STARTUP] bot created and configured')
+  return bot
+}
+
+module.exports = { createBot }
diff --git a/src/server.js b/src/server.js
index 3e82754..07cb6cc 100644
--- a/src/server.js
+++ b/src/server.js
@@ -1,6 +1,6 @@
 const restify = require('restify')
 
-const start = ({ appInfo, log, onMessage, onNotify }) => {
+const createServer = ({ appInfo, log, onMessage, onNotify }) => {
   const server = restify.createServer({ log })
   server.use(restify.plugins.queryParser())
   server.use(restify.plugins.bodyParser())
@@ -26,14 +26,16 @@ const start = ({ appInfo, log, onMessage, onNotify }) => {
   })
 
   server.post('/api/messages', async (req, res, next) => {
-    await onMessage()
+    await onMessage(req, res)
     next()
   })
 
   server.post('/api/notify', async (req, res, next) => {
-    await onNotify(req, res)
+    const input = {} // TODO extract input from req
+    const notification = await onNotify(input)
+    res.send(notification)
     next()
   })
 }
 
-module.exports = { start }
+module.exports = { createServer }
diff --git a/src/storage.js b/src/storage.js
new file mode 100644
index 0000000..aacd641
--- /dev/null
+++ b/src/storage.js
@@ -0,0 +1,16 @@
+const { TurnContext } = require('botbuilder')
+
+const db = {}
+
+const createStorage = log => {
+  return {
+    add: activity => {
+      const ref = TurnContext.getConversationReference(activity)
+      const id = ref.conversation.id
+      log.debug('[refs] updating conversation #%s', id)
+      db[id] = ref
+    }
+  }
+}
+
+module.exports = { createStorage }