is related to asp.net session management.
Session can be maintained in 3 different ways as seen below.
- session kept as live objects in web server (aspnet_wp.exe).
Use "cookieless" configuration in web.config to "munge" the sessionId onto the URL (solves cookie/domain/path RFC problems too!)
- session serialized and stored in memory in a separate process (aspnet_state.exe). State Server can run on another machine
- session serialized and stored in SQL server
in-proc,out-proc and sql server.
Detailed description: InProc and OutProc