Web programming is the way to make a powerful Internet technology solution.  Sometimes a static web site is not good enough, so some choose to hire a web programmer / web application developer. 

A web developer will use scripting to build dynamic web pages.  Web pages that change based on data in a database or certain conditions.  These dynamic websites often take the form of a web application.

Web programmers can use PHP, ASP, ASP.net, or others.  On the Unix platform, PHP is probably the most common scripting language.  It is not compiled, but is fast nonetheless.  ASP is a script language as well.  (No compiling necessary) and runs on a Windows server.  ASP.net is a popular compiled web programming platform.