The FastCGI support in IIS enables popular application frameworks that support FastCGI protocol to be hosted on the IIS web server in a high-performance and reliable way. FastCGI provides a high-performance alternative to the Common Gateway Interface (CGI), a standard way of interfacing external applications with Web servers that has been supported as part of the IIS feature-set since the very first release.
Microsoft IIS 7.0 for Windows Server® 2008 and Windows Vista SP1 now includes a built-in FastCGI component. This walkthrough leads you through the steps to use FastCGI module to host PHP applications on IIS7 in Windows Server 2008 and Windows Vista SP1. [Read]