Considering hosting Web based services on IIS 7.0?
If you are contemplating to move over (upgrade) to IIS 7.0 from your existing Web hosting on either IIS 5.0 or 6.0 this is a very useful Technical White Paper link. It talks about various aspects of improvements in IIS 7.0 dealing with Management, Performance, Extensibility, Security and Deployment.
Migrating a Large, High-Volume Web Site to Internet Information Services 7.0
Cheers!