Getting Low Level - A low-level Look at the ASP.NET Architecture

This article looks at how Web requests flow through the ASP.NET framework from a very low level perspective, from Web Server, through ISAPI all the way up the request handler and your code.

See what happens behind the scenes and stop thinking of ASP.NET as a black box.

http://www.west-wind.com/presentations/howaspnetworks/howaspnetworks.asp