Adding Pool and Type to the Backend Contract

specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2023-03-01-preview/definitions.json

@@ -1933,6 +1933,25 @@
         "circuitBreaker": {
           "$ref": "#/definitions/BackendCircuitBreaker",
           "description": "Backend Circuit Breaker Configuration"
+        },
+        "pool": {
+          "allOf": [
+            {
+              "$ref": "#/definitions/BackendPool"
+            },
+            {
+              "description": "Backend Pool Properties"
+            }
+          ]
+        },
+        "type": {
+          "type": "string",
+          "enum": [
+            "single",
+            "pool"
+          ],
+          "description": "Type of the backend. A backend can be either Single or Pool.",
+          "x-apim-code-nillable": true
         }
       },
       "description": "Backend entity base Parameter set."
@@ -2334,6 +2353,31 @@
         }
       }
     },
+    "BackendPool": {
+      "type": "object",
+      "description": "Backend pool information",
+      "properties": {
+        "services": {
+          "type": "array",
+          "description": "The list of backend entities belonging to a pool.",
+          "items": {
+            "$ref": "#/definitions/BackendPoolItem"
+          },
+          "minItems": 2
+        }
+      }
+    },
+    "BackendPoolItem": {
+      "type": "object",
+      "description": "Pool service information",
+      "properties": {
+        "id": {
+          "type": "string",
+          "description": "The unique id of the backend entity. The ID should refer to an already existing backend entity.",
+          "x-apim-code-resourceId": "/backends/{backendId}"
+        }
+      }
+    },
     "BearerTokenSendingMethodsContract": {
       "type": "string",
       "description": "Form of an authorization grant, which the client uses to request the access token.",