How can we develop an application using ArcGIS Pro SDK which runs as an service in the background rather than using it like a ArcGIS Pro Add-In which requires ArcGIS Pro to be opened always. The application will do simple operations like connecting underlying database (utility network model) and read feature class information. I tried creating WCF and SOE applications but these throw exceptions when accessing feature class (utility network model) which says "Unable to instantiate class for xml schema type: UtilityNetworkMembership". May be because ArcGIS Pro is not open in that case. It works fine while in case of Add-In. Need guidance how to proceed with this.