The long and the short of it is that we have entered into a new era, in which data centers will no longer simply be collections of servers, but will actually be computing units in and of themselves--often made up of similar computing units (e.g. containers) in a sort of fractal arrangement. Virtualization is key to make this happen (though server virtualization itself is not technically absolutely necessary). So are powerful management tools, policy and workflow automation, data and compute load portability, and utility-type monitoring and metering systems.
September 15, 2008
Meanwhile, back in the cloud :