IIS 7.5 Benefits to SharePoint

1. Application Warm-Up module included to speed up first-load of sites.
2. App Pool isolation which reduces security risk of code or long running operations interfering with other sites.
3. Performance improvements include compression for both static and dynamic content, output caching and SSL.
4. Shared Config: IIS 7.5 allows administrators to create one config file that can be used to set the configuration settings for multiple servers from one location.
5. Some advanced SharePoint settings can only be changed using the new PowerShell available on Windows Server 2008 R2.