host.json

{
  "version": "2.0",
  "logging": {
    "logLevel": {
      "default": "Information"
    },
    "applicationInsights": {
      "samplingSettings": {
        "isEnabled": true,
        "maxTelemetryItemsPerSecond": 5,
        "includedTypes": "PageView;Trace;Dependency",
        "excludedTypes": "Exception;Event;CustomEvent;Request"
      }
    }
  },
  "extensions": {
    "http": {
      "routePrefix": ""
    },
    "durableTask": {
      "hubName": "%SLOT_TASK_HUBNAME%",
      "localRpcEndpointEnabled": false,
      "storageProvider": {
        "connectionStringName": "DURABLE_FUNCTION_STORAGE_CONNECTION_STRING"
      },
      "tracing": {
        "traceInputsAndOutputs": false,
        "traceReplayEvents": false
      }
    }
  },
  "extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[3.*, 4.0.0)"
  }
}