{
  ...
  "outputs": {
    "IoTHubConnectionString": {
      "type": "string",
      "value": "[concat('HostName=', reference(resourceId('Microsoft.Devices/IoTHubs', parameters('iotHubName')), providers('Microsoft.Devices', 'IoTHubs').apiVersions[0]).hostName, ';SharedAccessKeyName=iothubowner;SharedAccessKey=', listKeys(resourceId('Microsoft.Devices/IotHubs', parameters('iotHubName')), providers('Microsoft.Devices', 'IoTHubs').apiVersions[0]).value[0].primaryKey)]"
    },
    "IoTHubEventHubCompatibleConnectionString": {
      "type": "string",
      "value": "[concat('Endpoint=', reference(resourceId('Microsoft.Devices/IoTHubs', parameters('iotHubName')), providers('Microsoft.Devices', 'IoTHubs').apiVersions[0]).eventHubEndpoints.events.endpoint, ';SharedAccessKeyName=iothubowner;SharedAccessKey=', listKeys(resourceId('Microsoft.Devices/IotHubs', parameters('iotHubName')), providers('Microsoft.Devices', 'IoTHubs').apiVersions[0]).value[0].primaryKey, ';EntityPath=', reference(resourceId('Microsoft.Devices/IoTHubs', parameters('iotHubName')), providers('Microsoft.Devices', 'IoTHubs').apiVersions[0]).eventHubEndpoints.events.path)]"
    }
  }
}