diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/assignments.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/assignments.json
new file mode 100644
index 000000000000..be26e1b90a31
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/assignments.json
@@ -0,0 +1,382 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "title": "Security Center",
+    "description": "API spec for Microsoft.Security (Azure Security Center) resource provider",
+    "version": "2021-08-01-preview"
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "security": [
+    {
+      "azure_auth": [
+        "user_impersonation"
+      ]
+    }
+  ],
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "flow": "implicit",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  },
+  "paths": {
+    "/subscriptions/{subscriptionId}/providers/Microsoft.Security/assignments": {
+      "get": {
+        "x-ms-examples": {
+          "List security standardAssignments by subscription level scope": {
+            "$ref": "./examples/Assignments/ListBySubscriptionAssignments_example.json"
+          }
+        },
+        "tags": [
+          "Assignments"
+        ],
+        "description": "Get a list of all relevant standardAssignments over a subscription level scope",
+        "operationId": "Assignments_ListBySubscription",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/AssignmentList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Security/assignments": {
+      "get": {
+        "x-ms-examples": {
+          "List security standardAssignments by subscriptionId and resourceGroup scope": {
+            "$ref": "./examples/Assignments/ListAssignments_example.json"
+          }
+        },
+        "tags": [
+          "Assignments"
+        ],
+        "description": "Get a list of all relevant standardAssignments available for scope",
+        "operationId": "Assignments_List",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/AssignmentList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Security/assignments/{assignmentId}": {
+      "get": {
+        "x-ms-examples": {
+          "Get security standardAssignments by by specific standardAssignmentId": {
+            "$ref": "./examples/Assignments/GetAssignment_example.json"
+          }
+        },
+        "tags": [
+          "Assignments"
+        ],
+        "description": "Get a specific standard assignment for the requested scope by resourceId",
+        "operationId": "Assignments_Get",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          },
+          {
+            "$ref": "#/parameters/AssignmentId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Assignment"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        }
+      },
+      "put": {
+        "x-ms-examples": {
+          "Exempt Recommendation From standard and resource": {
+            "$ref": "./examples/Assignments/PutAssignment_example.json"
+          },
+          "Define a default standard assignment": {
+            "$ref": "./examples/Assignments/PutDefaultAssignment_example.json"
+          }
+        },
+        "tags": [
+          "Assignments"
+        ],
+        "description": "Create a security assignment on the given scope. Will create/update the required standard assignment. ",
+        "operationId": "Assignments_CreateOrUpdate",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          },
+          {
+            "$ref": "#/parameters/AssignmentId"
+          },
+          {
+            "$ref": "#/parameters/AssignmentBody"
+          }
+        ],
+        "responses": {
+          "201": {
+            "description": "Created",
+            "schema": {
+              "$ref": "#/definitions/Assignment"
+            }
+          },
+          "200": {
+            "description": "OK - Updated",
+            "schema": {
+              "$ref": "#/definitions/Assignment"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        }
+      },
+      "delete": {
+        "x-ms-examples": {
+          "Delete security assignment": {
+            "$ref": "./examples/Assignments/DeleteAssignment_example.json"
+          }
+        },
+        "tags": [
+          "Assignments"
+        ],
+        "description": "Delete a standard assignment over a given scope",
+        "operationId": "Assignments_Delete",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          },
+          {
+            "$ref": "#/parameters/AssignmentId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK - Standard was deleted"
+          },
+          "204": {
+            "description": "No Content - Standard does not exist"
+          },
+          "default": {
+            "description": "Error response describing why the operation failed"
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "AssignmentList": {
+      "type": "object",
+      "description": "Page of a standard assignment list",
+      "properties": {
+        "value": {
+          "description": "Collection of standardAssignments in this page",
+          "readOnly": true,
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Assignment"
+          }
+        },
+        "nextLink": {
+          "readOnly": true,
+          "type": "string",
+          "description": "The URI to fetch the next page"
+        }
+      }
+    },
+    "Assignment": {
+      "type": "object",
+      "description": "Security Assignment on a resource group over a given scope",
+      "properties": {
+        "properties": {
+          "description": "Properties of a security assignment",
+          "x-ms-client-flatten": true,
+          "$ref": "#/definitions/AssignmentProperties"
+        },
+        "systemData": {
+          "readOnly": true,
+          "type": "object",
+          "description": "Azure Resource Manager metadata containing createdBy and modifiedBy information.",
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/systemData"
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "../../../common/v1/types.json#/definitions/TrackedResource"
+        }
+      ]
+    },
+    "AssignmentProperties": {
+      "type": "object",
+      "description": "Describes the properties of a standardAssignment",
+      "properties": {
+        "displayName": {
+          "description": "display name of the standardAssignment",
+          "type": "string"
+        },
+        "description": {
+          "description": "description of the standardAssignment",
+          "type": "string"
+        },
+        "assignedStandard": {
+          "description": "Standard item with key as applied to this standard assignment over the given scope",
+          "$ref": "#/definitions/AssignedStandardItem"
+        },
+        "assignedComponent": {
+          "description": "Component item with key as applied to this standard assignment over the given scope",
+          "$ref": "#/definitions/AssignedComponentItem"
+        },
+        "scope": {
+          "description": "Scope to which the standardAssignment applies - can be a subscription path or a resource group under that subscription",
+          "type": "string"
+        },
+        "effect": {
+          "description": "expected effect of this assignment (Disable/Exempt/etc)",
+          "type": "string"
+        },
+        "expiresOn": {
+          "description": "Expiration date of this assignment as a full ISO date",
+          "type": "string",
+          "format": "date-time"
+        },
+        "additionalData": {
+          "description": "Additional data about the assignment",
+          "type": "object",
+          "properties": {
+            "exemptionCategory": {
+              "description": "Exemption category of this assignment",
+              "type": "string"
+            }
+          }
+        },
+        "metadata": {
+          "description": "The assignment metadata. Metadata is an open ended object and is typically a collection of key value pairs.",
+          "type": "object"
+        }
+      }
+    },
+    "AssignedStandardItem": {
+      "type": "object",
+      "description": "describe the properties of a of a security standard object reference",
+      "properties": {
+        "id": {
+          "description": "full resourceId of the Microsoft.Security/standard object",
+          "type": "string"
+        }
+      }
+    },
+    "AssignedComponentItem": {
+      "type": "object",
+      "description": "describe the properties of a security assessment object reference (by key)",
+      "properties": {
+        "key": {
+          "description": "unique key to a security assessment object",
+          "type": "string"
+        }
+      }
+    }
+  },
+  "parameters": {
+    "AssignmentId": {
+      "name": "assignmentId",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The security assignment key - unique key for the standard assignment",
+      "x-ms-parameter-location": "method"
+    },
+    "AssignmentBody": {
+      "name": "assignment",
+      "in": "body",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/Assignment"
+      },
+      "description": "Custom standard assignment over a pre-defined scope",
+      "x-ms-parameter-location": "method"
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/DeleteAssignment_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/DeleteAssignment_example.json
new file mode 100644
index 000000000000..6134d4a1a0a0
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/DeleteAssignment_example.json
@@ -0,0 +1,12 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup",
+    "assignmentId": "8bb8be0a-6010-4789-812f-e4d661c4ed0e"
+  },
+  "responses": {
+    "200": {},
+    "204": {}
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/GetAssignment_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/GetAssignment_example.json
new file mode 100644
index 000000000000..32e810b59ccb
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/GetAssignment_example.json
@@ -0,0 +1,43 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup",
+    "assignmentId": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "type": "Microsoft.Security/assignments",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "ASC Default",
+          "description": "Set of policies monitored by Azure Security Center for cross cloud",
+          "assignedStandard": {
+            "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+          },
+          "effect": "Exempt",
+          "expiresOn": "2022-05-01T19:50:47.083633Z",
+          "additionalData": {
+            "exemptionCategory": "waiver"
+          },
+          "metadata": {
+            "ticketId": 12345
+          },
+          "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/ListAssignments_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/ListAssignments_example.json
new file mode 100644
index 000000000000..fa1133a2a29b
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/ListAssignments_example.json
@@ -0,0 +1,77 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "type": "Microsoft.Security/assignments",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "ASC Default",
+              "description": "Set of policies monitored by Azure Security Center for cross cloud",
+              "assignedStandard": {
+                "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+              },
+              "effect": "Exempt",
+              "expiresOn": "2022-05-01T19:50:47.083633Z",
+              "additionalData": {
+                "exemptionCategory": "waiver"
+              },
+              "metadata": {
+                "ticketId": 12345
+              },
+              "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          },
+          {
+            "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "type": "Microsoft.Security/assignment",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "ASC Default",
+              "description": "Set of policies monitored by Azure Security Center for cross cloud",
+              "assignedStandard": {
+                "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+              },
+              "effect": "Exempt",
+              "expiresOn": "2022-05-01T19:50:47.083633Z",
+              "additionalData": {
+                "exemptionCategory": "waiver"
+              },
+              "metadata": {
+                "ticketId": 12345
+              },
+              "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/ListBySubscriptionAssignments_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/ListBySubscriptionAssignments_example.json
new file mode 100644
index 000000000000..254ff8ac8cbd
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/ListBySubscriptionAssignments_example.json
@@ -0,0 +1,76 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignements/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "type": "Microsoft.Security/assignments",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "ASC Default",
+              "description": "Set of policies monitored by Azure Security Center for cross cloud",
+              "assignedStandard": {
+                "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+              },
+              "effect": "Exempt",
+              "expiresOn": "2022-05-01T19:50:47.083633Z",
+              "additionalData": {
+                "exemptionCategory": "waiver"
+              },
+              "metadata": {
+                "ticketId": 12345
+              },
+              "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          },
+          {
+            "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "type": "Microsoft.Security/assignments",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "ASC Default",
+              "description": "Set of policies monitored by Azure Security Center for cross cloud",
+              "assignedStandard": {
+                "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+              },
+              "effect": "Exempt",
+              "expiresOn": "2022-05-01T19:50:47.083633Z",
+              "additionalData": {
+                "exemptionCategory": "waiver"
+              },
+              "metadata": {
+                "ticketId": 12345
+              },
+              "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/PutAssignment_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/PutAssignment_example.json
new file mode 100644
index 000000000000..0f91a2aab821
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/PutAssignment_example.json
@@ -0,0 +1,103 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup",
+    "assignmentId": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+    "assignment": {
+      "properties": {
+        "displayName": "ASC Default",
+        "description": "Set of policies monitored by Azure Security Center for cross cloud",
+        "assignedStandard": {
+          "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+        },
+        "assignedComponent": {
+          "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+        },
+        "effect": "Exempt",
+        "expiresOn": "2022-05-01T19:50:47.083633Z",
+        "additionalData": {
+          "exemptionCategory": "waiver"
+        },
+        "metadata": {
+          "ticketId": 12345
+        },
+        "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "type": "Microsoft.Security/assignments",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "ASC Default",
+          "description": "Set of policies monitored by Azure Security Center for cross cloud",
+          "assignedStandard": {
+            "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+          },
+          "assignedComponent": {
+            "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+          },
+          "effect": "Exempt",
+          "expiresOn": "2022-05-01T19:50:47.083633Z",
+          "additionalData": {
+            "exemptionCategory": "waiver"
+          },
+          "metadata": {
+            "ticketId": 12345
+          },
+          "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    },
+    "201": {
+      "body": {
+        "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "type": "Microsoft.Security/assignments",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "ASC Default",
+          "description": "Set of policies monitored by Azure Security Center for cross cloud",
+          "assignedStandard": {
+            "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+          },
+          "assignedComponent": {
+            "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+          },
+          "effect": "Exempt",
+          "expiresOn": "2022-05-01T19:50:47.083633Z",
+          "additionalData": {
+            "exemptionCategory": "waiver"
+          },
+          "metadata": {
+            "ticketId": 12345
+          },
+          "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/PutDefaultAssignment_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/PutDefaultAssignment_example.json
new file mode 100644
index 000000000000..562e8d7c875a
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Assignments/PutDefaultAssignment_example.json
@@ -0,0 +1,73 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup",
+    "assignmentId": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+    "assignment": {
+      "properties": {
+        "displayName": "ASC Default",
+        "description": "Set of policies monitored by Azure Security Center for cross cloud",
+        "assignedStandard": {
+          "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+        },
+        "effect": "audit",
+        "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "type": "Microsoft.Security/assignments",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "ASC Default",
+          "description": "Set of policies monitored by Azure Security Center for cross cloud",
+          "assignedStandard": {
+            "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+          },
+          "effect": "audit",
+          "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    },
+    "201": {
+      "body": {
+        "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/assignments/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "type": "Microsoft.Security/assignments",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "ASC Default",
+          "description": "Set of policies monitored by Azure Security Center for cross cloud",
+          "assignedStandard": {
+            "id": "/providers/Microsoft.Security/Standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8"
+          },
+          "effect": "audit",
+          "scope": "/subscriptions/ae640e6b-ba3e-4256-9d62-2993eecfa6f2/ResourceGroup/rg"
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/DeleteStandard_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/DeleteStandard_example.json
new file mode 100644
index 000000000000..275b7ca62600
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/DeleteStandard_example.json
@@ -0,0 +1,12 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup",
+    "standardId": "8bb8be0a-6010-4789-812f-e4d661c4ed0e"
+  },
+  "responses": {
+    "200": {},
+    "204": {}
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/GetStandard_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/GetStandard_example.json
new file mode 100644
index 000000000000..b21f0cff101e
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/GetStandard_example.json
@@ -0,0 +1,41 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup",
+    "standardId": "21300918-b2e3-0346-785f-c77ff57d243b"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+        "type": "Microsoft.Security/standards",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "Cross cloud standard 1",
+          "standardType": "Custom",
+          "description": "Controls and security data implementing security recommendations defined in Azure Security",
+          "category": "SecurityCenter",
+          "components": [
+            {
+              "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+            },
+            {
+              "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+            }
+          ]
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/ListBySubscriptionStandards_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/ListBySubscriptionStandards_example.json
new file mode 100644
index 000000000000..ab68d16db797
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/ListBySubscriptionStandards_example.json
@@ -0,0 +1,72 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "type": "Microsoft.Security/standards",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "Cross cloud standard 1",
+              "standardType": "Custom",
+              "description": "Controls and security data implementing security recommendations defined in Azure Security",
+              "category": "SecurityCenter",
+              "components": [
+                {
+                  "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+                },
+                {
+                  "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+                }
+              ]
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          },
+          {
+            "id": "/subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/standards/155afdf9-d239-4a5c-847f-89da613e7143",
+            "name": "155afdf9-d239-4a5c-847f-89da613e7143",
+            "type": "Microsoft.Security/standards",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "Cross cloud standard 2",
+              "standardType": "Custom",
+              "description": "Controls and security data implementing security recommendations defined in Azure Security",
+              "category": "SecurityCenter",
+              "components": [
+                {
+                  "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+                },
+                {
+                  "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+                }
+              ]
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/ListStandards_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/ListStandards_example.json
new file mode 100644
index 000000000000..333264a9acdd
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/ListStandards_example.json
@@ -0,0 +1,73 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/standards/1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "name": "1f3afdf9-d0c9-4c3d-847f-89da613e70a8",
+            "type": "Microsoft.Security/standards",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "Cross cloud standard 1",
+              "standardType": "Custom",
+              "description": "Controls and security data implementing security recommendations defined in Azure Security",
+              "category": "SecurityCenter",
+              "components": [
+                {
+                  "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+                },
+                {
+                  "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+                }
+              ]
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          },
+          {
+            "id": "/subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/providers/Microsoft.Security/standards/155afdf9-d239-4a5c-847f-89da613e7143",
+            "name": "155afdf9-d239-4a5c-847f-89da613e7143",
+            "type": "Microsoft.Security/standards",
+            "location": "East US",
+            "etag": "etag value",
+            "properties": {
+              "displayName": "Cross cloud standard 2",
+              "standardType": "Custom",
+              "description": "Controls and security data implementing security recommendations defined in Azure Security",
+              "category": "SecurityCenter",
+              "components": [
+                {
+                  "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+                },
+                {
+                  "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+                }
+              ]
+            },
+            "systemData": {
+              "createdBy": "user@contoso.com",
+              "createdByType": "User",
+              "createdAt": "2021-08-31T13:47:50.328Z",
+              "lastModifiedBy": "user@contoso.com",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/PutStandard_example.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/PutStandard_example.json
new file mode 100644
index 000000000000..f5f1c7edb385
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/examples/Standards/PutStandard_example.json
@@ -0,0 +1,87 @@
+{
+  "parameters": {
+    "api-version": "2021-08-01-preview",
+    "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
+    "resourceGroupName": "myResourceGroup",
+    "standardId": "8bb8be0a-6010-4789-812f-e4d661c4ed0e",
+    "standard": {
+      "properties": {
+        "displayName": "Azure Test Security Standard 1",
+        "description": "description of Azure Test Security Standard 1",
+        "category": "SecurityCenter",
+        "components": [
+          {
+            "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+          },
+          {
+            "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+          }
+        ]
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/provider/Microsoft.Security/standards/8bb8be0a-6010-4789-812f-e4d661c4ed0e",
+        "name": "8bb8be0a-6010-4789-812f-e4d661c4ed0e",
+        "type": "Microsoft.Security/standards",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "Azure Test Security Standard 1",
+          "standardType": "Custom",
+          "description": "description of Azure Test Security Standard 1",
+          "category": "SecurityCenter",
+          "components": [
+            {
+              "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+            },
+            {
+              "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+            }
+          ]
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    },
+    "201": {
+      "body": {
+        "id": "/subscriptions/20ff7fc3-e762-44dd-bd96-b71116dcdc23/resourceGroups/myResourceGroup/provider/Microsoft.Security/standards/8bb8be0a-6010-4789-812f-e4d661c4ed0e",
+        "name": "8bb8be0a-6010-4789-812f-e4d661c4ed0e",
+        "type": "Microsoft.Security/standards",
+        "location": "East US",
+        "etag": "etag value",
+        "properties": {
+          "displayName": "Azure Test Security Standard 1",
+          "standardType": "Custom",
+          "description": "description of Azure Test Security Standard 1",
+          "category": "SecurityCenter",
+          "components": [
+            {
+              "key": "1195afff-c881-495e-9bc5-1486211ae03f"
+            },
+            {
+              "key": "dbd0cb49-b563-45e7-9724-889e799fa648"
+            }
+          ]
+        },
+        "systemData": {
+          "createdBy": "user@contoso.com",
+          "createdByType": "User",
+          "createdAt": "2021-08-31T13:47:50.328Z",
+          "lastModifiedBy": "user@contoso.com",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-08-31T13:47:50.328Z"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/standards.json b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/standards.json
new file mode 100644
index 000000000000..4c4a5203cba0
--- /dev/null
+++ b/specification/security/resource-manager/Microsoft.Security/preview/2021-08-01-preview/standards.json
@@ -0,0 +1,353 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "title": "Security Center",
+    "description": "API spec for Microsoft.Security (Azure Security Center) resource provider",
+    "version": "2021-08-01-preview"
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "security": [
+    {
+      "azure_auth": [
+        "user_impersonation"
+      ]
+    }
+  ],
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "flow": "implicit",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  },
+  "paths": {
+    "/subscriptions/{subscriptionId}/providers/Microsoft.Security/standards": {
+      "get": {
+        "x-ms-examples": {
+          "List security standards by subscription level scope": {
+            "$ref": "./examples/Standards/ListBySubscriptionStandards_example.json"
+          }
+        },
+        "tags": [
+          "Standards"
+        ],
+        "description": "Get a list of all relevant security standards over a subscription level scope.",
+        "operationId": "Standards_ListBySubscription",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/StandardList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Security/standards": {
+      "get": {
+        "x-ms-examples": {
+          "List security standards": {
+            "$ref": "./examples/Standards/ListStandards_example.json"
+          }
+        },
+        "tags": [
+          "Standards"
+        ],
+        "description": "Get security standards on all your resources inside a scope",
+        "operationId": "Standards_List",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/StandardList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Security/standards/{standardId}": {
+      "get": {
+        "x-ms-examples": {
+          "Get a specific security standard by scope and standardId": {
+            "$ref": "./examples/Standards/GetStandard_example.json"
+          }
+        },
+        "tags": [
+          "Standards"
+        ],
+        "description": "Get a specific security standard for the requested scope",
+        "operationId": "Standards_Get",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          },
+          {
+            "$ref": "#/parameters/StandardId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Standard"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        }
+      },
+      "put": {
+        "x-ms-examples": {
+          "Create a security standard on a specified scope": {
+            "$ref": "./examples/Standards/PutStandard_example.json"
+          }
+        },
+        "tags": [
+          "Standards"
+        ],
+        "description": "Create a security standard on the given scope.  Available only for custom standards.  Will create/update the required standard definitions.",
+        "operationId": "Standards_CreateOrUpdate",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          },
+          {
+            "$ref": "#/parameters/StandardId"
+          },
+          {
+            "$ref": "#/parameters/StandardBody"
+          }
+        ],
+        "responses": {
+          "201": {
+            "description": "Created",
+            "schema": {
+              "$ref": "#/definitions/Standard"
+            }
+          },
+          "200": {
+            "description": "OK - Updated",
+            "schema": {
+              "$ref": "#/definitions/Standard"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        }
+      },
+      "delete": {
+        "x-ms-examples": {
+          "Delete a security standard over the specified scope": {
+            "$ref": "./examples/Standards/DeleteStandard_example.json"
+          }
+        },
+        "tags": [
+          "Standards"
+        ],
+        "description": "Delete a security standard on a scope.",
+        "operationId": "Standards_Delete",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersion"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionId"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupName"
+          },
+          {
+            "$ref": "#/parameters/StandardId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK - Standard was deleted"
+          },
+          "204": {
+            "description": "No Content - Standard does not exist"
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../common/v1/types.json#/definitions/CloudError"
+            }
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "StandardList": {
+      "type": "object",
+      "description": "Page of a Standard list",
+      "properties": {
+        "value": {
+          "description": "Collection of standards in this page",
+          "readOnly": true,
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Standard"
+          }
+        },
+        "nextLink": {
+          "readOnly": true,
+          "type": "string",
+          "description": "The URI to fetch the next page"
+        }
+      }
+    },
+    "Standard": {
+      "type": "object",
+      "description": "Security Standard on a resource",
+      "properties": {
+        "properties": {
+          "description": "Properties of a security standard",
+          "x-ms-client-flatten": true,
+          "$ref": "#/definitions/StandardProperties"
+        },
+        "systemData": {
+          "readOnly": true,
+          "type": "object",
+          "description": "Azure Resource Manager metadata containing createdBy and modifiedBy information.",
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/systemData"
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "../../../common/v1/types.json#/definitions/TrackedResource"
+        }
+      ]
+    },
+    "StandardProperties": {
+      "type": "object",
+      "description": "Describes properties of a standard.",
+      "properties": {
+        "displayName": {
+          "description": "display name of the standard, equivalent to the standardId",
+          "type": "string"
+        },
+        "standardType": {
+          "description": "standard type (Custom or BuiltIn only currently)",
+          "type": "string",
+          "readOnly": true
+        },
+        "description": {
+          "description": "description of the standard",
+          "type": "string"
+        },
+        "category": {
+          "description": "category of the standard provided",
+          "type": "string"
+        },
+        "components": {
+          "description": "List of component objects containing component unique keys (such as assessment keys) to apply to standard scope.  Currently only supports assessment keys.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/StandardComponentProperties"
+          }
+        }
+      }
+    },
+    "StandardComponentProperties": {
+      "type": "object",
+      "description": "Describes properties of an component as related to the standard",
+      "properties": {
+        "key": {
+          "description": "Component Key matching componentMetadata",
+          "type": "string"
+        }
+      }
+    }
+  },
+  "parameters": {
+    "StandardId": {
+      "name": "standardId",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The Security Standard key - unique key for the standard type",
+      "x-ms-parameter-location": "method"
+    },
+    "StandardBody": {
+      "name": "standard",
+      "in": "body",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/Standard"
+      },
+      "description": "Custom security standard over a pre-defined scope",
+      "x-ms-parameter-location": "method"
+    }
+  }
+}
diff --git a/specification/security/resource-manager/readme.md b/specification/security/resource-manager/readme.md
index 053e69555b67..f9bd14454755 100644
--- a/specification/security/resource-manager/readme.md
+++ b/specification/security/resource-manager/readme.md
@@ -44,6 +44,18 @@ directive:
     from: ingestionSettings.json
     where: $.definitions.IngestionConnectionString.properties.value
     reason: Secrets are OK to return in a POST response.
+  - suppress: OperationsAPIImplementation
+    where: $.paths
+    from: settings.json
+    reason: Operations API has nothing to do with current additions.
+  - suppress: OperationsAPIImplementation
+    where: $.paths
+    from: assignments.json
+    reason: Suppression of OperationsAPI as it doesn't apply to this specific file.
+  - suppress: OperationsAPIImplementation
+    where: $.paths
+    from: standards.json
+    reason: Suppression of OperationsAPI as it doesn't apply to this specific file.
 ```
 
 ### Basic Information
@@ -54,13 +66,26 @@ These are the global settings for the Security API.
 title: SecurityCenter
 description: API spec for Microsoft.Security (Azure Security Center) resource provider
 openapi-type: arm
-tag: package-composite-v3
+tag: package-preview-2021-08
 ```
 
 ### Composite packages
 
 The following packages may be composed from multiple api-versions.
 
+### Tag: package-preview-2021-08
+
+These settings apply only when `--tag=package-preview-2021-08` is specified on the command line.
+
+``` yaml $(tag) == 'package-preview-2021-08'
+input-file:
+  - Microsoft.Security/preview/2021-08-01-preview/standards.json
+  - Microsoft.Security/preview/2021-08-01-preview/assignments.json
+
+override-info:
+  title: SecurityCenter
+```
+
 ### Tag: package-composite-v1
 
 These settings apply only when `--tag=package-composite-v1` is specified on the command line.