Network Virtualization

The Cisco Factor However, if you want to throw the first kind of network virtualization into the mix, sure Cisco is selling a ton of gear (such as Catalyst switches) that use virtualization (which, of course, has nothing to do with hypervisors per se.) As to Microsoft's conspicuous absence in the top three, Saugatuck contends that Microsoft will not be a fully engaged market force in 2009 as it continues the process of rolling out Hyper-V.

“Microsoft's new solution will not be roduction-ready for most users for 6 to 12 months after its release", the report states. You could certainly argue that a lot of early deployments will be used for test and development. You could further argue that VMM 2008 still hasn't gone into G/A and won't be available until later this year. In fairness to the report's authors, Charlie Burns and Bruce Guptill, the report was issued earlier this
year, well before the release of Hyper-V.