diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/ManagedEnvironments.json b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/ManagedEnvironments.json
index 40d4fc45d9c6..c4b77bc31268 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/ManagedEnvironments.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/ManagedEnvironments.json
@@ -202,6 +202,9 @@
         "x-ms-examples": {
           "Create environments": {
             "$ref": "./examples/ManagedEnvironments_CreateOrUpdate.json"
+          },
+          "Create environment with custom infrastructureResourceGroup": {
+            "$ref": "./examples/ManagedEnvironments_CustomInfrastructureResourceGroup_Create.json"
           }
         }
       },
@@ -1228,6 +1231,14 @@
             "daprConfiguration": {
               "$ref": "#/definitions/DaprConfiguration",
               "description": "The configuration of Dapr component."
+            },
+            "infrastructureResourceGroup": {
+              "description": "Name of the platform-managed resource group created for the Managed Environment to host infrastructure resources. If a subnet ID is provided, this resource group will be created in the same subscription as the subnet.",
+              "type": "string",
+              "x-ms-mutability": [
+                "create",
+                "read"
+              ]
             }
           },
           "x-ms-client-flatten": true
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_CreateOrUpdate.json b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_CreateOrUpdate.json
index 1baa19c6e162..057109dcb94c 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_CreateOrUpdate.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_CreateOrUpdate.json
@@ -88,7 +88,8 @@
               "minimumCount": 3,
               "maximumCount": 6
             }
-          ]
+          ],
+          "infrastructureResourceGroup": "capp-svc-testcontainerenv-eastus"
         }
       }
     },
@@ -136,7 +137,8 @@
               "minimumCount": 3,
               "maximumCount": 6
             }
-          ]
+          ],
+          "infrastructureResourceGroup": "capp-svc-testcontainerenv-eastus"
         }
       }
     }
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_CustomInfrastructureResourceGroup_Create.json b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_CustomInfrastructureResourceGroup_Create.json
new file mode 100644
index 000000000000..9cf9a7c8e06c
--- /dev/null
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_CustomInfrastructureResourceGroup_Create.json
@@ -0,0 +1,147 @@
+{
+  "parameters": {
+    "subscriptionId": "34adfa4f-cedf-4dc0-ba29-b6d1a69ab345",
+    "resourceGroupName": "examplerg",
+    "environmentName": "testcontainerenv",
+    "api-version": "2022-11-01-preview",
+    "environmentEnvelope": {
+      "location": "East US",
+      "properties": {
+        "daprAIConnectionString": "InstrumentationKey=00000000-0000-0000-0000-000000000000;IngestionEndpoint=https://northcentralus-0.in.applicationinsights.azure.com/",
+        "appLogsConfiguration": {
+          "logAnalyticsConfiguration": {
+            "customerId": "string",
+            "sharedKey": "string"
+          }
+        },
+        "zoneRedundant": true,
+        "vnetConfiguration": {
+          "infrastructureSubnetId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/RGName/providers/Microsoft.Network/virtualNetworks/VNetName/subnets/subnetName1"
+        },
+        "customDomainConfiguration": {
+          "dnsSuffix": "www.my-name.com",
+          "certificateValue": "Y2VydA==",
+          "certificatePassword": "Y2VydA=="
+        },
+        "workloadProfiles": [
+          {
+            "workloadProfileType": "GeneralPurpose",
+            "minimumCount": 3,
+            "maximumCount": 12
+          },
+          {
+            "workloadProfileType": "MemoryOptimized",
+            "minimumCount": 3,
+            "maximumCount": 6
+          },
+          {
+            "workloadProfileType": "ComputeOptimized",
+            "minimumCount": 3,
+            "maximumCount": 6
+          }
+        ],
+        "infrastructureResourceGroup": "myInfrastructureRgName"
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/examplerg/providers/Microsoft.App/managedEnvironments/testcontainerenv",
+        "name": "testcontainerenv",
+        "type": "Microsoft.App/managedEnvironments",
+        "location": "East US",
+        "properties": {
+          "provisioningState": "Succeeded",
+          "deploymentErrors": null,
+          "defaultDomain": "testcontainerenv.k4apps.io",
+          "staticIp": "1.2.3.4",
+          "appLogsConfiguration": {
+            "logAnalyticsConfiguration": {
+              "customerId": "string"
+            }
+          },
+          "zoneRedundant": true,
+          "vnetConfiguration": {
+            "infrastructureSubnetId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/RGName/providers/Microsoft.Network/virtualNetworks/VNetName/subnets/subnetName1"
+          },
+          "customDomainConfiguration": {
+            "customDomainVerificationId": "custom domain verification id",
+            "dnsSuffix": "www.my-name.com",
+            "subjectName": "CN=www.my-name.com",
+            "expirationDate": "2022-11-06T04:00:00Z",
+            "thumbprint": "CERTIFICATE_THUMBPRINT"
+          },
+          "eventStreamEndpoint": "testEndpoint",
+          "workloadProfiles": [
+            {
+              "workloadProfileType": "GeneralPurpose",
+              "minimumCount": 3,
+              "maximumCount": 12
+            },
+            {
+              "workloadProfileType": "MemoryOptimized",
+              "minimumCount": 3,
+              "maximumCount": 6
+            },
+            {
+              "workloadProfileType": "ComputeOptimized",
+              "minimumCount": 3,
+              "maximumCount": 6
+            }
+          ],
+          "infrastructureResourceGroup": "myInfrastructureRgName"
+        }
+      }
+    },
+    "201": {
+      "body": {
+        "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/examplerg/providers/Microsoft.App/managedEnvironments/testcontainerenv",
+        "name": "testcontainerenv",
+        "type": "Microsoft.App/managedEnvironments",
+        "location": "East US",
+        "properties": {
+          "provisioningState": "InitializationInProgress",
+          "deploymentErrors": null,
+          "defaultDomain": "testcontainerenv.k4apps.io",
+          "staticIp": "1.2.3.4",
+          "appLogsConfiguration": {
+            "logAnalyticsConfiguration": {
+              "customerId": "string"
+            }
+          },
+          "zoneRedundant": true,
+          "vnetConfiguration": {
+            "infrastructureSubnetId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/RGName/providers/Microsoft.Network/virtualNetworks/VNetName/subnets/subnetName1"
+          },
+          "customDomainConfiguration": {
+            "customDomainVerificationId": "custom domain verification id",
+            "dnsSuffix": "www.my-name.com",
+            "subjectName": "CN=www.my-name.com",
+            "expirationDate": "2022-11-06T04:00:00Z",
+            "thumbprint": "CERTIFICATE_THUMBPRINT"
+          },
+          "eventStreamEndpoint": "testEndpoint",
+          "workloadProfiles": [
+            {
+              "workloadProfileType": "GeneralPurpose",
+              "minimumCount": 3,
+              "maximumCount": 12
+            },
+            {
+              "workloadProfileType": "MemoryOptimized",
+              "minimumCount": 3,
+              "maximumCount": 6
+            },
+            {
+              "workloadProfileType": "ComputeOptimized",
+              "minimumCount": 3,
+              "maximumCount": 6
+            }
+          ],
+          "infrastructureResourceGroup": "myInfrastructureRgName"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Get.json b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Get.json
index 53c71ecbdbbb..1ecc085bf8c4 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Get.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Get.json
@@ -52,7 +52,8 @@
           },
           "daprConfiguration": {
             "version": "1.9"
-          }
+          },
+          "infrastructureResourceGroup": "capp-svc-jlaw-demo1-northcentralus"
         }
       }
     }
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListByResourceGroup.json b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListByResourceGroup.json
index 5bf66eafdf46..d791c94ba214 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListByResourceGroup.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListByResourceGroup.json
@@ -48,7 +48,8 @@
                   "minimumCount": 3,
                   "maximumCount": 6
                 }
-              ]
+              ],
+              "infrastructureResourceGroup": "capp-svc-jlaw-demo1-northcentralus"
             }
           },
           {
@@ -74,7 +75,8 @@
               "eventStreamEndpoint": "testEndpoint",
               "vnetConfiguration": {
                 "infrastructureSubnetId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/RGName/providers/Microsoft.Network/virtualNetworks/VNetName/subnets/subnetName1"
-              }
+              },
+              "infrastructureResourceGroup": "capp-svc-demo1-northcentralus"
             }
           }
         ]
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListBySubscription.json b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListBySubscription.json
index d3d05fcb1793..70609d4fc09e 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListBySubscription.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_ListBySubscription.json
@@ -47,7 +47,8 @@
                   "minimumCount": 3,
                   "maximumCount": 6
                 }
-              ]
+              ],
+              "infrastructureResourceGroup": "capp-svc-jlaw-demo1-northcentralus"
             }
           },
           {
@@ -73,7 +74,8 @@
                 "expirationDate": "2022-11-06T04:00:00Z",
                 "thumbprint": "CERTIFICATE_THUMBPRINT"
               },
-              "eventStreamEndpoint": "testEndpoint"
+              "eventStreamEndpoint": "testEndpoint",
+              "infrastructureResourceGroup": "capp-svc-demo1-northcentralus"
             }
           }
         ]
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Patch.json b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Patch.json
index 64727d08f2bb..7e68e0b2b2f5 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Patch.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-11-01-preview/examples/ManagedEnvironments_Patch.json
@@ -50,7 +50,8 @@
               "minimumCount": 3,
               "maximumCount": 6
             }
-          ]
+          ],
+          "infrastructureResourceGroup": "capp-svc-jlaw-demo1-northcentralus"
         }
       }
     },