In addition to the traditional session virtualization scenario, which Terminal Services has enabled for many years, Windows Server 2008 R2 has expanded its role to provide an extensible platform for a Virtual Desktop Infrastructure (VDI). VDI is a centralized desktop delivery architecture which allows customers to centralize the storage, execution, and management of a Windows desktop in the datacenter. It enables Windows 7 Enterprise and other desktop environments to run and be managed in virtual machines on a centralized server.