For Web service clients, OpenEdge hosts all application service management, including access to AppServer resources, in a remote Web service session. This Web service session is managed by the OpenEdge Web Services Adapter (WSA) and it is this session to which the Web service client is logically bound. However, in a session-managed model, the Web service session is physically connected to a single AppServer. In this case, the AppServer and the WSA can simulate an active physical connection to the client using context information that it passes in Web service messages between the AppServer and the client. For more information on how Web service clients work with both session-free and session-managed Web services, see OpenEdge Development: Web Services.