Server virtualization allows organizations to consolidate operating systems and applications onto fewer physical servers to reduce energy consumption and better utilize existing hardware investments. It also provides a foundation for desktop virtualization and cloud computing. Desktop virtualization encapsulates standard desktops into virtual images to retire old hardware, lower energy usage, and provide access from any device. Virtual desktops also simplify disaster recovery by only requiring backups of the master images and allowing quick recovery using technologies like VMware's vMotion and High Availability. Virtualizing servers and desktops helps organizations repurpose aging hardware, go green, extend their Windows investments, gain hardware independence, improve user flexibility and security, and enhance disaster recovery capabilities.