Windows Server 2008 with IIS7 (Internet Information Services) is the foundation of Microsoft's Web platform, and offers many exciting advancements in web serving technology.
IIS7 includes a new modular design that allowed for a lessened attack surface and increased performance.
IIS7 also delivers a new Integrated HTTP Processing Pipeline, which makes ASP.NET applications even more powerful than before, and enables developers to have first-class access to core web server extensibility.