Windows Server Essentials role
While this might not sound like a big deal, it has the potential to make life much easier for any organization with a geographically distributed network. With Windows Server 2012, you have to use a completely different installation source for Windows Server Essentials. For large organizations, this can impact both distribution strategy and configuration management. The Windows Server Essentials role in Windows Server 2012 R2 brings with it a number of other features -- including BranchCache, DFS Namespaces, and Remote Server Administration Tools -- that are typically implemented in remote office settings.