What is virtualization?

[Corey Bettenhausen]

Default User wrote:
> I have been hearing virtualization being mentioned more and more
> recently.  I don't really know much about it.  Would someone please give
> a simple "Cliff's Notes" (TM) version of what it is, how it works, and
> why anyone would bother to use it at all.  
> 
> Please resist the urge to answer that "I if you don't know what it is,
> you don't need it".  
> 
> Thanks.

http://www.kernelthread.com/publications/virtualization/
http://en.wikipedia.org/wiki/Virtualization
-Corey