This year it seems like every other computing news story has discussed virtualization, and if you haven't yet got a grip on what it means, you probably feel a little left-out. Virtualization seems to defy common sense, and it can be hard to understand why there's a rush of interest surrounding it.
For this end of year posting I've taken time-out to explain virtualization in everyday, simple language, using analogies with existing technologies. As always with any attempt to explain things in without getting too technically involved, it's impossible to be exact. More knowledgeable readers will have to forgive me if it seems I cut a few corners.

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