Microsoft Virtual Server
Definition - What does Microsoft Virtual Server mean?
Microsoft Virtual Server is an extensible server virtualization program produced by Microsoft that allows the operation of a number of systems on a single physical server. This is most common in offices and small-scale enterprises which require a small and lightweight solution for their business needs. The software does not require third-party device drivers for installation and offers privacy and segregation between systems.
Techopedia explains Microsoft Virtual Server
Microsoft Virtual Server is software that enables the server association of business networks and data centers. Starting from just a few guests connectivity in a Standard edition, the 2005 Enterprise version could support up to 64 guests and hundreds of symmetric processes and threads.
The software was bought by Microsoft from Connectix in February 2003. After its free availability in April 2006, the Standard Edition was discontinued to compete with other software available for server virtualization. Microsoft Virtual Server was discontinued and in 2008 was replaced with Hyper-V.