Windows Server 2008 and IIS 7.0

Looks like Microsoft have been listening to our customers (IIS wasn't planned to be a role on a Core installation):

Microsoft Takes Web Hosting to a New Level with Internet Information Services 7.0

Q&A: What Microsoft’s decision to add Internet Information Services 7.0 to the Server Core Installation Option of Windows Server 2008 means for customers and partners.

https://www.microsoft.com/presspass/features/2007/jun07/06-04IIS7.mspx