Microsoft has released a Windows Server 2008 R2 Feature Components Poster for download
>> Windows Server 2008 R2 Feature Components Poster
This poster provides a visual reference for understanding key technologies in Windows Server 2008 R2. It focuses on Active Directory Domain Services, Hyper-V, Internet Information Services, Remote Desktop Services (including Virtual Desktop Infrastructure (VDI)), BranchCache, and DirectAccess technologies. In addition, updates to core file services and server management are illustrated. You can use this poster in conjunction with the previously published Windows Server 2008 Component Posters.
>> Windows Server 2008 R2 Feature Components Poster