Before, we dive into the evolution of ASP, we should review some basic Web client/server
fundamentals. At the highest level, communication in a Web-based environment occurs
between two entities: (1) a Web client (most commonly a Web browser such as Internet
Explorer or Netscape Navigator), which is an application that requests files from a Web
server, and (2) a Web server, which is a software application, usually residing on a server,
that handles client requests.