What is Virtualization?
Several years ago, I wrote an article for this site about Microsoft Virtual PC, Microsoft’s implementation of virtualization technology for the Windows desktop. Virtualization software enables a computer to act as a host, running multiple computer sessions with different operating systems for the purpose of testing software, isolating specific programs from the rest of the software on the host machine or maintaining older operating systems as needed after an upgrade. Virtual PC was a somewhat simplified virtualization software which officially supported various versions of DOS and Windows and made the virtualization concept a little more accessible to the average user. With the release of Windows 8, it was succeeded by Hyper-V on machines with the necessary hardware requirements and Windows 8 editions.