http://blogs.technet.com/daven/archive/2007/06/21/microsoft-com-running-windows-server-2008-longhorn-beta-3.aspxMicrosoft.com are running IIS7 on all of their servers! (except for a single box which they use to do comparative studies with). More details here . Dave.en-IECommunityServer 2.1 SP1 (Build: 61025.2)