Classic ASP Built-in Objects

ASP 2.0 provided six built-in objects: Application, ASPError, Request, Response, Server, and Session. Session, for example, represents a cookie-based session that maintains the state of variables from page to page. The Active Scripting engine's support of the Component Object Model (COM) enables ASP Websites to access functionality in compiled libraries such as DLLs.

Reference: http://en.wikipedia.org/wiki/Active_Server_Pages