You can use a service reference to interact with eConnect Integration Service. The service reference allows your application to work directly with the eConnect Integration Service using the identity of the logged on user. If you add a service reference, you do not need to add the Microsoft.Dynamics.GP.eConnect assembly and namespace to your development project.
The interface provided by the service reference includes the same methods you find in the Microsoft.Dynamics.GP.eConnect assembly and namespace. Before you use a service reference to access eConnect Integration Service, you should become familiar with Windows Communication Foundation (WCF) development concepts.
For information about how to add a service reference to an application, see eConnect Integration Service .