When you, especially as a web developer, delve into the reseller hosting market, you will see that ASP.Net is a very popular application used to build dynamic web services, web applications and web sites.  ASP.Net is marketed by Microsoft and was first released in 2002.  As the main building block for application development, ASP.Net web pages (aka “web forms”) are contained in files with the “.aspx” extension with static HTML markup as well as web and user controls for placing the dynamic content for the web page.

ASP.Net simplifies the transition that developers have to make from the application development phase to the user interface phase.  Therefore, reseller web hosts will be able to offer applications much easier because the initial developer has done all the hard work, hence the template system that many originating web hosts provide to the resellers. The resellers then provide these templates to their customers. In addition, ASP.Net has great XML support as well as an enormous “class library” that was built by Microsoft.