If the chosen model is session-managed, a given client has a persistent physical connection to the AppServer over which context can be managed. If the chosen model is session-free, a given client has no persistent physical connection to an AppServer for managing context, but a logical connection that associates the client with the application (or Web) service supported by one or more AppServer resources.

For more information on session models and how they affect Open Client applications, see Overview. For a complete definition of session models and how they affect the interaction between an AppServer and a client, see OpenEdge Application Server: Developing AppServer Applications.