Hyper-V

Hyper-V is an integral part of Windows Server and provides a foundational virtualization platform that enables you to transition to the cloud. With Windows Server 2008 R2 you get a compelling solution for core virtualization scenarios – production server consolidation, dynamic datacenter, business continuity, VDI and test & development.

Hyper-V provides you better flexibility with features like live migration and cluster shared volumes for storage flexibility.

Windows Server 2008 R2 Hyper-V Home Page
http://www.microsoft.com/en-us/server-cloud/windows-server/hyper-v.aspx

Learn about VMWare to Hyper-V Migrations

Learn about Microsoft Private Cloud Deployments