diff --git a/README.md b/README.md
index 4cabaf32..ba7fc102 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # IoMT FHIR Connector for Azure
 
-[![Build Status](https://microsofthealthoss.visualstudio.com/FhirServer/_apis/build/status/IoMT/IoMT%20CI%20Build?branchName=master)](https://microsofthealthoss.visualstudio.com/FhirServer/_build/latest?definitionId=12&branchName=master)
+[![Build Status](https://microsofthealthoss.visualstudio.com/FhirServer/_apis/build/status/IoMT/IoMT%20CI%20Build?branchName=main)](https://microsofthealthoss.visualstudio.com/FhirServer/_build/latest?definitionId=12&branchName=main)
 
 The IoMT FHIR Connector for Azure is an open-source project for ingesting data from IoMT (internet of medical things) devices and persisting the data in a FHIR® server. The goal of this Microsoft Healthcare project is to enable developers to rapidly deploy a service for ingesting high frequency IoMT data and landing the data in a FHIR server of their choice.
 
diff --git a/deploy/scripts/Create-IomtFhirSandboxEnvironment.ps1 b/deploy/scripts/Create-IomtFhirSandboxEnvironment.ps1
index 63038a73..89139eae 100644
--- a/deploy/scripts/Create-IomtFhirSandboxEnvironment.ps1
+++ b/deploy/scripts/Create-IomtFhirSandboxEnvironment.ps1
@@ -38,7 +38,7 @@ param
     [string]$SourceRepository = "https://github.com/microsoft/iomt-fhir",
   
     [Parameter(Mandatory = $false)]
-    [string]$SourceRevision = "master",
+    [string]$SourceRevision = "main",
 
 	[parameter(Mandatory = $false)]
     [SecureString]$AdminPassword,
diff --git a/deploy/scripts/Create-IomtWebJobsEnvironment.ps1 b/deploy/scripts/Create-IomtWebJobsEnvironment.ps1
index ec623a63..ba2cbcee 100644
--- a/deploy/scripts/Create-IomtWebJobsEnvironment.ps1
+++ b/deploy/scripts/Create-IomtWebJobsEnvironment.ps1
@@ -33,7 +33,7 @@ param
     [string]$SourceRepository = "https://github.com/microsoft/iomt-fhir",
   
     [Parameter(Mandatory = $false)]
-    [string]$SourceRevision = "master",
+    [string]$SourceRevision = "main",
 
     [Parameter(Mandatory = $true)]
     [string]$FhirServiceUrl,
diff --git a/deploy/templates/consumption-azuredeploy.json b/deploy/templates/consumption-azuredeploy.json
index 29914c81..e664e937 100644
--- a/deploy/templates/consumption-azuredeploy.json
+++ b/deploy/templates/consumption-azuredeploy.json
@@ -19,7 +19,7 @@
     },
     "RepositoryBranch": {
       "type": "string",
-      "defaultValue": "master",
+      "defaultValue": "main",
       "metadata": {
         "description": "Source code branch to deploy."
       }
diff --git a/deploy/templates/default-azuredeploy-sandbox.json b/deploy/templates/default-azuredeploy-sandbox.json
index 38a7ddc5..42712287 100644
--- a/deploy/templates/default-azuredeploy-sandbox.json
+++ b/deploy/templates/default-azuredeploy-sandbox.json
@@ -19,7 +19,7 @@
     },
     "RepositoryBranch": {
       "type": "string",
-      "defaultValue": "master",
+      "defaultValue": "main",
       "metadata": {
         "description": "Source code branch to deploy."
       }
@@ -191,7 +191,7 @@
     },
     "IomtConnectorTemplateUrl": {
       "type": "string",
-      "defaultValue": "https://raw.githubusercontent.com/Microsoft/iomt-fhir/master/deploy/templates/default-managed-identity-azuredeploy.json",
+      "defaultValue": "https://raw.githubusercontent.com/Microsoft/iomt-fhir/main/deploy/templates/default-managed-identity-azuredeploy.json",
       "metadata": {
         "description": "URL for IOMT Connector template"
       }
diff --git a/deploy/templates/default-azuredeploy-webjobs.json b/deploy/templates/default-azuredeploy-webjobs.json
index 9d0526ff..cc23ba9e 100644
--- a/deploy/templates/default-azuredeploy-webjobs.json
+++ b/deploy/templates/default-azuredeploy-webjobs.json
@@ -19,7 +19,7 @@
     },
     "RepositoryBranch": {
       "type": "string",
-      "defaultValue": "master",
+      "defaultValue": "main",
       "metadata": {
         "description": "Source code branch to deploy."
       }
diff --git a/deploy/templates/default-managed-identity-azuredeploy.json b/deploy/templates/default-managed-identity-azuredeploy.json
index 7e8621a2..4dbac2cb 100644
--- a/deploy/templates/default-managed-identity-azuredeploy.json
+++ b/deploy/templates/default-managed-identity-azuredeploy.json
@@ -19,7 +19,7 @@
     },
     "RepositoryBranch": {
       "type": "string",
-      "defaultValue": "master",
+      "defaultValue": "main",
       "metadata": {
         "description": "Source code branch to deploy."
       }
diff --git a/deploy/templates/premium-azuredeploy.json b/deploy/templates/premium-azuredeploy.json
index ba6a67b1..4af58437 100644
--- a/deploy/templates/premium-azuredeploy.json
+++ b/deploy/templates/premium-azuredeploy.json
@@ -19,7 +19,7 @@
     },
     "RepositoryBranch": {
       "type": "string",
-      "defaultValue": "master",
+      "defaultValue": "main",
       "metadata": {
         "description": "Source code branch to deploy."
       }
diff --git a/docs/ARMInstallation.md b/docs/ARMInstallation.md
index be3163dc..ec2c4628 100644
--- a/docs/ARMInstallation.md
+++ b/docs/ARMInstallation.md
@@ -2,7 +2,7 @@
 This article details provisioning and installation of the IoMT FHIR Connector for Azure and connecting to Azure API for FHIR with a managed identity in the same subscription using an ARM template.
 
 ## ARM Template Provisioning
-<a href="https://portal.azure.com/#create/Microsoft.Template/uri/https%3A%2F%2Fraw.githubusercontent.com%2FMicrosoft%2Fiomt-fhir%2Fmaster%2Fdeploy%2Ftemplates%2Fdefault-managed-identity-azuredeploy.json" target="_blank">
+<a href="https://portal.azure.com/#create/Microsoft.Template/uri/https%3A%2F%2Fraw.githubusercontent.com%2FMicrosoft%2Fiomt-fhir%2Fmain%2Fdeploy%2Ftemplates%2Fdefault-managed-identity-azuredeploy.json" target="_blank">
     <img src="https://azuredeploy.net/deploybutton.png"/>
 </a>
 
diff --git a/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/Detail.Forms.Tutorials.tsx b/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/Detail.Forms.Tutorials.tsx
index 97b746f7..0038841a 100644
--- a/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/Detail.Forms.Tutorials.tsx
+++ b/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/Detail.Forms.Tutorials.tsx
@@ -91,7 +91,7 @@ export const DeviceEditFormTutorial = (props: {}) => {
                     </tbody>
                 </table>
                 <p>
-                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md">IoMT Mapping Configuration</a>
+                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/main/docs/Configuration.md">IoMT Mapping Configuration</a>
                 </p>
             </CardBody>
         </Card>
@@ -146,7 +146,7 @@ export const FhirValueFormTutorial = (props: {}) => {
                     </tbody>
                 </table>
                 <p>
-                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md">IoMT Mapping Configuration</a>
+                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/main/docs/Configuration.md">IoMT Mapping Configuration</a>
                 </p>
             </CardBody>
         </Card>
@@ -170,7 +170,7 @@ export const FhirComponentsFormTutorial = (props: {}) => {
                     <li>Codings of each component should be specified to the value in it.</li>
                 </ul>
                 <p>
-                    Please check "Heart Rate - Sampled Data" as an example in <a href="https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md">IoMT Mapping Configuration</a>
+                    Please check "Heart Rate - Sampled Data" as an example in <a href="https://github.com/microsoft/iomt-fhir/blob/main/docs/Configuration.md">IoMT Mapping Configuration</a>
                 </p>
             </CardBody>
         </Card>
@@ -188,7 +188,7 @@ export const FhirCodesFormTutorial = (props: {}) => {
                     Add <a href="https://www.hl7.org/fhir/observation-definitions.html#Observation.code">Observation.code</a> to the final FHIR Observation resource.
                 </p>
                 <p>
-                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md">IoMT Mapping Configuration</a>
+                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/main/docs/Configuration.md">IoMT Mapping Configuration</a>
                 </p>
             </CardBody>
         </Card>
@@ -209,7 +209,7 @@ export const FhirCategoryFormTutorial = (props: {}) => {
                     This is optional information.
                 </p>
                 <p>
-                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md">IoMT Mapping Configuration</a>
+                    For more information, please visit: <a href="https://github.com/microsoft/iomt-fhir/blob/main/docs/Configuration.md">IoMT Mapping Configuration</a>
                 </p>
             </CardBody>
         </Card>
@@ -235,7 +235,7 @@ export const FhirGroupingGroupTutorial = (props: {}) => {
                     <li>1 Day</li>
                 </ul>
                 <p>
-                    For more information, please check "PeriodInterval" in: <a href="https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md">IoMT Mapping Configuration</a>
+                    For more information, please check "PeriodInterval" in: <a href="https://github.com/microsoft/iomt-fhir/blob/main/docs/Configuration.md">IoMT Mapping Configuration</a>
                 </p>
             </CardBody>
         </Card>
diff --git a/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/List.Modals.Import.tsx b/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/List.Modals.Import.tsx
index 19d61abe..ad2e9186 100644
--- a/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/List.Modals.Import.tsx
+++ b/tools/data-mapper/Microsoft.Health.Tools.DataMapper/ClientApp/src/components/mapping/List.Modals.Import.tsx
@@ -49,7 +49,7 @@ const MappingImportModal = (props: { onImported: Function }) => {
                 <ModalHeader toggle={toggle}>Enter mapping templates to import</ModalHeader>
                 <ModalBody>
                     <div className="iomt-cm-modal-description">
-                        Full example templates can be found under <a href="https://github.com/microsoft/iomt-fhir/tree/master/sample/templates">here</a>.
+                        Full example templates can be found under <a href="https://github.com/microsoft/iomt-fhir/tree/main/sample/templates">here</a>.
                     </div>
                     <Row>
                         {
diff --git a/tools/data-mapper/README.md b/tools/data-mapper/README.md
index d792009d..4a6c2671 100644
--- a/tools/data-mapper/README.md
+++ b/tools/data-mapper/README.md
@@ -95,7 +95,7 @@ This tool is built with ReactJS. It requires Npm dependencies to build and run.
 
 ### How to Make Mappings
 
-1. Make sure you have read the introduction of [IoMT FHIR Connector for Azure](https://github.com/microsoft/iomt-fhir) and understand the purpose of its [configuration](https://github.com/microsoft/iomt-fhir/blob/master/docs/Configuration.md).
+1. Make sure you have read the introduction of [IoMT FHIR Connector for Azure](https://github.com/microsoft/iomt-fhir) and understand the purpose of its [configuration](https://github.com/microsoft/iomt-fhir/blob/main/docs/Configuration.md).
 2. After you open the tool, you will see the empty list on the page. Now you can add a new mapping by clicking the "Add new mapping" button. You need to provide a unique name for the data type that the mapping should apply to.
    ![Create Mapping](./images/create-new-mapping.png)
 3. Edit the device mapping. Based on your device data structure, you need to fill in the expressions for each mapping field. The syntax is the JSON path. Please check FAQs for common problems.