diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ContainerApps.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ContainerApps.json
index 3546171f470c..eeb88222661a 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ContainerApps.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ContainerApps.json
@@ -309,6 +309,58 @@
           }
         }
       }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.App/containerApps/{containerAppName}/listCustomHostNameAnalysis": {
+      "post": {
+        "tags": [
+          "ContainerApps"
+        ],
+        "summary": "Analyzes a custom hostname for a Container App",
+        "operationId": "ContainerApps_ListCustomHostNameAnalysis",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "name": "containerAppName",
+            "in": "path",
+            "description": "Name of the Container App.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "customHostname",
+            "in": "query",
+            "description": "Custom hostname.",
+            "type": "string"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/CustomHostnameAnalysisResult"
+            }
+          },
+          "default": {
+            "description": "Common error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Analyze Custom Hostname": {
+            "$ref": "./examples/ContainerApps_ListCustomHostNameAnalysis.json"
+          }
+        }
+      }
     }
   },
   "definitions": {
@@ -400,6 +452,11 @@
               "type": "string",
               "readOnly": true
             },
+            "customDomainVerificationId": {
+              "description": "Id used to verify domain name ownership",
+              "type": "string",
+              "readOnly": true
+            },
             "configuration": {
               "$ref": "#/definitions/Configuration",
               "description": "Non versioned Container App configuration properties."
@@ -489,6 +546,16 @@
             "revisionName"
           ]
         },
+        "customDomains": {
+          "description": "custom domain bindings for Container Apps' hostnames.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/CustomDomain"
+          },
+          "x-ms-identifiers": [
+            "name"
+          ]
+        },
         "allowInsecure": {
           "description": "Bool indicating if HTTP connections to is allowed. If set to false HTTP connections are automatically redirected to HTTPS connections",
           "type": "boolean"
@@ -551,6 +618,124 @@
           "type": "boolean"
         }
       }
+    },
+    "CustomDomain": {
+      "description": "Custom Domain of a Container App",
+      "type": "object",
+      "properties": {
+        "name": {
+          "description": "Hostname.",
+          "type": "string"
+        },
+        "bindingType": {
+          "description": "Custom Domain binding type.",
+          "enum": [
+            "Disabled",
+            "SniEnabled"
+          ],
+          "type": "string",
+          "x-ms-enum": {
+            "name": "bindingType",
+            "modelAsString": true
+          }
+        },
+        "certificateId": {
+          "description": "Resource Id of the Certificate to be bound to this hostname. Must exist in the Managed Environment.",
+          "type": "string"
+        }
+      }
+    },
+    "CustomHostnameAnalysisResult": {
+      "description": "Custom domain analysis.",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "../../../../../common-types/resource-management/v3/types.json#/definitions/ProxyResource"
+        }
+      ],
+      "properties": {
+        "properties": {
+          "description": "CustomHostnameAnalysisResult resource specific properties",
+          "type": "object",
+          "properties": {
+            "hostName": {
+              "description": "Host name that was analyzed",
+              "type": "string",
+              "readOnly": true
+            },
+            "isHostnameAlreadyVerified": {
+              "description": "<code>true</code> if hostname is already verified; otherwise, <code>false</code>.",
+              "type": "boolean",
+              "readOnly": true
+            },
+            "customDomainVerificationTest": {
+              "description": "DNS verification test result.",
+              "enum": [
+                "Passed",
+                "Failed",
+                "Skipped"
+              ],
+              "type": "string",
+              "readOnly": true,
+              "x-ms-enum": {
+                "name": "DnsVerificationTestResult",
+                "modelAsString": false
+              }
+            },
+            "customDomainVerificationFailureInfo": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse",
+              "description": "Raw failure information if DNS verification fails.",
+              "readOnly": true
+            },
+            "hasConflictOnManagedEnvironment": {
+              "description": "<code>true</code> if there is a conflict on the Container App's managed environment; otherwise, <code>false</code>.",
+              "type": "boolean",
+              "readOnly": true
+            },
+            "conflictingContainerAppResourceId": {
+              "description": "Name of the conflicting Container App on the Managed Environment if it's within the same subscription.",
+              "type": "string",
+              "readOnly": true
+            },
+            "cNameRecords": {
+              "description": "CName records visible for this hostname.",
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "txtRecords": {
+              "description": "TXT records visible for this hostname.",
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "aRecords": {
+              "description": "A records visible for this hostname.",
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "alternateCNameRecords": {
+              "description": "Alternate CName records visible for this hostname.",
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "alternateTxtRecords": {
+              "description": "Alternate TXT records visible for this hostname.",
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            }
+          },
+          "x-ms-client-flatten": true
+        }
+      }
     }
   },
   "securityDefinitions": {
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ManagedEnvironments.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ManagedEnvironments.json
index 840bd906a7df..232f057b1778 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ManagedEnvironments.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ManagedEnvironments.json
@@ -308,6 +308,284 @@
           }
         }
       }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.App/managedEnvironments/{managedEnvironmentName}/certificates": {
+      "get": {
+        "tags": [
+          "ManagedEnvironments",
+          "Certificates"
+        ],
+        "summary": "Get the Certificates in a given managed environment.",
+        "operationId": "Certificates_ListByManagedEnvironment",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "name": "managedEnvironmentName",
+            "in": "path",
+            "description": "Name of the Managed Environment.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/CertificateCollection"
+            }
+          },
+          "default": {
+            "description": "Error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "List Certificates by Managed Environment": {
+            "$ref": "./examples/Certificates_ListByManagedEnvironment.json"
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.App/managedEnvironments/{managedEnvironmentName}/certificates/{name}": {
+      "get": {
+        "tags": [
+          "ManagedEnvironments",
+          "Certificates"
+        ],
+        "summary": "Get the specified Certificate.",
+        "operationId": "Certificate_GetByName",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "name": "managedEnvironmentName",
+            "in": "path",
+            "description": "Name of the Managed Environment.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "name",
+            "in": "path",
+            "description": "Name of the Certificate.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Certificate"
+            }
+          },
+          "default": {
+            "description": "Error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Get Certificate": {
+            "$ref": "./examples/Certificate_Get.json"
+          }
+        }
+      },
+      "put": {
+        "tags": [
+          "ManagedEnvironments",
+          "Certificates"
+        ],
+        "summary": "Create or Update a Certificate.",
+        "operationId": "Certificate_CreateOrUpdate",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "name": "managedEnvironmentName",
+            "in": "path",
+            "description": "Name of the Managed Environment.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "name",
+            "in": "path",
+            "description": "Name of the Certificate.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "certificateEnvelope",
+            "in": "body",
+            "description": "Certificate to be created or updated",
+            "schema": {
+              "$ref": "#/definitions/Certificate"
+            }
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Certificate"
+            }
+          },
+          "default": {
+            "description": "Error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Create or Update Certificate": {
+            "$ref": "./examples/Certificate_CreateOrUpdate.json"
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "ManagedEnvironments",
+          "Certificates"
+        ],
+        "summary": "Deletes the specified Certificate.",
+        "operationId": "Certificate_Delete",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "name": "managedEnvironmentName",
+            "in": "path",
+            "description": "Name of the Managed Environment.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "name",
+            "in": "path",
+            "description": "Name of the Certificate.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Delete operation completed"
+          },
+          "204": {
+            "description": "Certificate does not exist"
+          },
+          "default": {
+            "description": "Error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Delete Certificate": {
+            "$ref": "./examples/Certificate_Delete.json"
+          }
+        }
+      },
+      "patch": {
+        "tags": [
+          "ManagedEnvironments",
+          "Certificates"
+        ],
+        "summary": "Update properties of a certificate",
+        "description": "Patches a certificate. Currently only patching of tags is supported",
+        "operationId": "Certificates_Update",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "name": "managedEnvironmentName",
+            "in": "path",
+            "description": "Name of the Managed Environment.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "name",
+            "in": "path",
+            "description": "Name of the Certificate.",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "certificateEnvelope",
+            "in": "body",
+            "required": true,
+            "description": "Properties of a certificate that need to be updated",
+            "schema": {
+              "$ref": "#/definitions/CertificatePatch"
+            }
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Container App updated successfully.",
+            "schema": {
+              "$ref": "#/definitions/Certificate"
+            }
+          },
+          "default": {
+            "description": "Common error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Patch Certificate": {
+            "$ref": "./examples/Certificates_Patch.json"
+          }
+        }
+      }
     }
   },
   "definitions": {
@@ -381,7 +659,7 @@
       ],
       "properties": {
         "properties": {
-          "description": "Environment resource specific properties",
+          "description": "Managed environment resource specific properties",
           "type": "object",
           "properties": {
             "provisioningState": {
@@ -501,6 +779,112 @@
           "x-ms-secret": true
         }
       }
+    },
+    "Certificate": {
+      "description": "Certificate used for Custom Domain bindings of Container Apps in a Managed Environment",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "../../../../../common-types/resource-management/v3/types.json#/definitions/TrackedResource"
+        }
+      ],
+      "properties": {
+        "properties": {
+          "description": "Certificate resource specific properties",
+          "type": "object",
+          "properties": {
+            "password": {
+              "description": "Certificate password.",
+              "type": "string",
+              "x-ms-mutability": [
+                "create"
+              ],
+              "x-ms-secret": true
+            },
+            "subjectName": {
+              "description": "Subject name of the certificate.",
+              "type": "string",
+              "readOnly": true
+            },
+            "value": {
+              "format": "byte",
+              "description": "PFX or PEM blob",
+              "type": "string",
+              "x-ms-mutability": [
+                "create"
+              ],
+              "x-ms-secret": true
+            },
+            "issuer": {
+              "description": "Certificate issuer.",
+              "type": "string",
+              "readOnly": true
+            },
+            "issueDate": {
+              "format": "date-time",
+              "description": "Certificate issue Date.",
+              "type": "string",
+              "readOnly": true
+            },
+            "expirationDate": {
+              "format": "date-time",
+              "description": "Certificate expiration date.",
+              "type": "string",
+              "readOnly": true
+            },
+            "thumbprint": {
+              "description": "Certificate thumbprint.",
+              "type": "string",
+              "readOnly": true
+            },
+            "valid": {
+              "description": "Is the certificate valid?.",
+              "type": "boolean",
+              "readOnly": true
+            },
+            "publicKeyHash": {
+              "description": "Public key hash.",
+              "type": "string",
+              "readOnly": true
+            }
+          }
+        }
+      },
+      "x-ms-client-flatten": true
+    },
+    "CertificateCollection": {
+      "description": "Collection of Certificates.",
+      "required": [
+        "value"
+      ],
+      "type": "object",
+      "properties": {
+        "value": {
+          "description": "Collection of resources.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Certificate"
+          }
+        },
+        "nextLink": {
+          "description": "Link to next page of resources.",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
+    "CertificatePatch": {
+      "description": "A certificate to update",
+      "type": "object",
+      "properties": {
+        "tags": {
+          "type": "object",
+          "additionalProperties": {
+            "type": "string"
+          },
+          "description": "Application-specific metadata in the form of key-value pairs."
+        }
+      }
     }
   },
   "securityDefinitions": {
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_CreateOrUpdate.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_CreateOrUpdate.json
new file mode 100644
index 000000000000..7f2020bbde18
--- /dev/null
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_CreateOrUpdate.json
@@ -0,0 +1,34 @@
+{
+  "parameters": {
+    "subscriptionId": "34adfa4f-cedf-4dc0-ba29-b6d1a69ab345",
+    "resourceGroupName": "examplerg",
+    "managedEnvironmentName": "testcontainerenv",
+    "name": "certificate-firendly-name",
+    "api-version": "2022-01-01-preview",
+    "certificateEnvelope": {
+      "location": "East US",
+      "properties": {
+        "password": "private key password",
+        "value": "PFX-or-PEM-blob"
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/examplerg/providers/Microsoft.App/managedEnvironments/testcontainerenv/certificate-firendly-name",
+        "type": "Microsoft.App/ManagedEnvironments/Certificates",
+        "location": "East US",
+        "properties": {
+          "subjectName": "my-subject-name.company.country.net",
+          "issuer": "Issuer Name",
+          "issueDate": "2021-11-06T04:00:00Z",
+          "expirationDate": "2022-11-06T04:00:00Z",
+          "thumbprint": "CERTIFICATE_THUMBPRINT",
+          "valid": true
+        }
+      }
+    }
+  }
+}
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_Delete.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_Delete.json
new file mode 100644
index 000000000000..a94acec7bb08
--- /dev/null
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_Delete.json
@@ -0,0 +1,13 @@
+{
+  "parameters": {
+    "subscriptionId": "34adfa4f-cedf-4dc0-ba29-b6d1a69ab345",
+    "resourceGroupName": "examplerg",
+    "managedEnvironmentName": "testcontainerenv",
+    "name": "certificate-firendly-name",
+    "api-version": "2022-01-01-preview"
+  },
+  "responses": {
+    "200": {},
+    "204": {}
+  }
+}
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_Get.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_Get.json
new file mode 100644
index 000000000000..bdb732bd2d6c
--- /dev/null
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificate_Get.json
@@ -0,0 +1,28 @@
+{
+  "parameters": {
+    "subscriptionId": "34adfa4f-cedf-4dc0-ba29-b6d1a69ab345",
+    "resourceGroupName": "examplerg",
+    "managedEnvironmentName": "testcontainerenv",
+    "name": "certificate-firendly-name",
+    "api-version": "2022-01-01-preview"
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/examplerg/providers/Microsoft.App/managedEnvironments/testcontainerenv/certificate-firendly-name",
+        "name": "certificate-firendly-name",
+        "type": "Microsoft.App/ManagedEnvironments/Certificates",
+        "location": "East US",
+        "properties": {
+          "subjectName": "my-subject-name.company.country.net",
+          "issuer": "Issuer Name",
+          "issueDate": "2021-11-06T04:00:00Z",
+          "expirationDate": "2022-11-06T04:00:00Z",
+          "thumbprint": "CERTIFICATE_THUMBPRINT",
+          "valid": true
+        }
+      }
+    }
+  }
+}
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificates_ListByManagedEnvironment.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificates_ListByManagedEnvironment.json
new file mode 100644
index 000000000000..b2c49403e21c
--- /dev/null
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificates_ListByManagedEnvironment.json
@@ -0,0 +1,45 @@
+{
+  "parameters": {
+    "subscriptionId": "34adfa4f-cedf-4dc0-ba29-b6d1a69ab345",
+    "resourceGroupName": "examplerg",
+    "managedEnvironmentName": "testcontainerenv",
+    "api-version": "2022-01-01-preview"
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/examplerg/providers/Microsoft.App/managedEnvironments/testcontainerenv/certificate-firendly-name",
+            "name": "certificate-firendly-name",
+            "type": "Microsoft.App/ManagedEnvironments/Certificates",
+            "location": "East US",
+            "properties": {
+              "subjectName": "my-subject-name.company.country.net",
+              "issuer": "Issuer Name",
+              "issueDate": "2021-11-06T04:00:00Z",
+              "expirationDate": "2022-11-06T04:00:00Z",
+              "thumbprint": "CERTIFICATE_THUMBPRINT",
+              "valid": true
+            }
+          },
+          {
+            "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/examplerg/providers/Microsoft.App/managedEnvironments/testcontainerenv/certificate-firendly-name",
+            "name": "certificate-firendly-name",
+            "type": "Microsoft.App/ManagedEnvironments/Certificates",
+            "location": "East US",
+            "properties": {
+              "subjectName": "my-subject-name.company.country.net",
+              "issuer": "Issuer Name",
+              "issueDate": "2021-11-06T04:00:00Z",
+              "expirationDate": "2022-11-06T04:00:00Z",
+              "thumbprint": "CERTIFICATE_THUMBPRINT",
+              "valid": true
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificates_Patch.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificates_Patch.json
new file mode 100644
index 000000000000..f26a38744f41
--- /dev/null
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/Certificates_Patch.json
@@ -0,0 +1,37 @@
+{
+  "parameters": {
+    "subscriptionId": "34adfa4f-cedf-4dc0-ba29-b6d1a69ab345",
+    "resourceGroupName": "examplerg",
+    "managedEnvironmentName": "testcontainerenv",
+    "name": "certificate-firendly-name",
+    "api-version": "2022-01-01-preview",
+    "certificateEnvelope": {
+      "tags": {
+        "tag1": "value1",
+        "tag2": "value2"
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/examplerg/providers/Microsoft.App/managedEnvironments/testcontainerenv/certificate-firendly-name",
+        "type": "Microsoft.App/ManagedEnvironments/Certificates",
+        "location": "East US",
+        "tags": {
+          "tag1": "value1",
+          "tag2": "value2"
+        },
+        "properties": {
+          "subjectName": "my-subject-name.company.country.net",
+          "issuer": "Issuer Name",
+          "issueDate": "2021-11-06T04:00:00Z",
+          "expirationDate": "2022-11-06T04:00:00Z",
+          "thumbprint": "CERTIFICATE_THUMBPRINT",
+          "valid": true
+        }
+      }
+    }
+  }
+}
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_CreateOrUpdate.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_CreateOrUpdate.json
index 1b05daa84158..b0c13e993503 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_CreateOrUpdate.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_CreateOrUpdate.json
@@ -11,7 +11,19 @@
         "configuration": {
           "ingress": {
             "external": true,
-            "targetPort": 3000
+            "targetPort": 3000,
+            "customDomains": [
+              {
+                "name": "www.my-name.com",
+                "bindingType": "SniEnabled",
+                "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-name-dot-com"
+              },
+              {
+                "name": "www.my-other-name.com",
+                "bindingType": "SniEnabled",
+                "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-other-name-dot-com"
+              }
+            ]
           }
         },
         "template": {
@@ -61,7 +73,19 @@
               "fqdn": "testcontainerApp0.demokube-t24clv0g.eastus.containerApps.k4apps.io",
               "external": true,
               "targetPort": 3000,
-              "transport": "auto"
+              "transport": "auto",
+              "customDomains": [
+                {
+                  "name": "www.my-name.com",
+                  "bindingType": "SniEnabled",
+                  "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-name-dot-com"
+                },
+                {
+                  "name": "www.my-other-name.com",
+                  "bindingType": "SniEnabled",
+                  "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-other-name-dot-com"
+                }
+              ]
             }
           },
           "template": {
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_Get.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_Get.json
index 2194863d1c4b..eda7d97e4c09 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_Get.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_Get.json
@@ -22,7 +22,19 @@
               "fqdn": "testcontainerApp0.demokube-t24clv0g.eastus.containerApps.k4apps.io",
               "external": true,
               "targetPort": 3000,
-              "transport": "auto"
+              "transport": "auto",
+              "customDomains": [
+                {
+                  "name": "www.my-name.com",
+                  "bindingType": "SniEnabled",
+                  "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-name-dot-com"
+                },
+                {
+                  "name": "www.my--other-name.com",
+                  "bindingType": "SniEnabled",
+                  "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-other-name-dot-com"
+                }
+              ]
             }
           },
           "template": {
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListByResourceGroup.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListByResourceGroup.json
index 85c441949e13..16216da219e6 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListByResourceGroup.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListByResourceGroup.json
@@ -23,7 +23,19 @@
                   "fqdn": "testcontainerApp0.demokube-t24clv0g.eastus.containerApps.k4apps.io",
                   "external": true,
                   "targetPort": 3000,
-                  "transport": "auto"
+                  "transport": "auto",
+                  "customDomains": [
+                    {
+                      "name": "www.my-name.com",
+                      "bindingType": "SniEnabled",
+                      "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-name-dot-com"
+                    },
+                    {
+                      "name": "www.my--other-name.com",
+                      "bindingType": "SniEnabled",
+                      "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-other-name-dot-com"
+                    }
+                  ]
                 }
               },
               "template": {
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListBySubscription.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListBySubscription.json
index 2e9fd134a9aa..cdc204f34756 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListBySubscription.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListBySubscription.json
@@ -22,7 +22,19 @@
                   "fqdn": "testcontainerApp0.demokube-t24clv0g.eastus.containerApps.k4apps.io",
                   "external": true,
                   "targetPort": 3000,
-                  "transport": "auto"
+                  "transport": "auto",
+                  "customDomains": [
+                    {
+                      "name": "www.my-name.com",
+                      "bindingType": "SniEnabled",
+                      "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-name-dot-com"
+                    },
+                    {
+                      "name": "www.my--other-name.com",
+                      "bindingType": "SniEnabled",
+                      "certificateId": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/managedEnvironments/demokube/certificates/my-certificate-for-my-other-name-dot-com"
+                    }
+                  ]
                 }
               },
               "template": {
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListCustomHostNameAnalysis.json b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListCustomHostNameAnalysis.json
new file mode 100644
index 000000000000..21f55a593221
--- /dev/null
+++ b/specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/examples/ContainerApps_ListCustomHostNameAnalysis.json
@@ -0,0 +1,45 @@
+{
+  "parameters": {
+    "subscriptionId": "34adfa4f-cedf-4dc0-ba29-b6d1a69ab345",
+    "resourceGroupName": "rg",
+    "containerAppName": "testcontainerApp0",
+    "customHostname": "my.name.corp",
+    "api-version": "2022-01-01-preview"
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "id": "/subscriptions/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/resourceGroups/rg/providers/Microsoft.App/containerApps/testcontainerApp0",
+        "properties": {
+          "hostName": "my.name.corp",
+          "isHostnameAlreadyVerified": true,
+          "customDomainVerificationTest": "Passed",
+          "customDomainVerificationFailureInfo": {},
+          "hasConflictOnManagedEnvironment": false,
+          "conflictingContainerAppResourceId": "",
+          "cNameRecords": [
+            "cNameRecord1",
+            "cNameRecord2"
+          ],
+          "txtRecords": [
+            "txtRecord1",
+            "txtRecord2"
+          ],
+          "aRecords": [
+            "aRecord1",
+            "aRecord2"
+          ],
+          "alternateCNameRecords": [
+            "cNameRecord1",
+            "cNameRecord2"
+          ],
+          "alternateTxtRecords": [
+            "txtRecord1",
+            "txtRecord2"
+          ]
+        }
+      }
+    }
+  }
+}