ASP and ASP.NET Tutorials ; ASP and ASP.NET are server side technologies. ; Both technologies enable computer code to be executed by an Internet server. ; When a browser requests an ASP or ASP.NET file, the ASP engine reads the file, executes any code in the file, and returns the result to the browser. ; ASP (aka Classic ASP) was introduced in 1998 as Microsoft's first server side scripting language.