The UDTT Service Engine is a bridge between the local (Rich Client and/or Server) application and the remote UDTT application (existing or newly created UDTT Operations and Flows) at the remote server. It works as a local proxy of the remote UDTT application. You can access the remote UDTT Operation, Flow and Data with it using the plain Java API from the local application, which may be a Java GUI App, Java Web App or a new created UDTT App.