IISpeed is a port of Google’s mod_PageSpeed designed to work with Microsoft’s IIS server software. IIS is one of the most popular servers on the web, powering millions of web-sites, and we are excited to bring the full power of PageSpeed optimization to the Windows platform.Source Steve Schofield's Blog : The Official Microsoft IIS Site
Jean-Pierre Paradis's Blog
Google
IIS7
IISpeed is a port of Google's mod_PageSpeed designed to work with Microsoft IIS server software