When is a cloud not a cloud?

When is a cloud not a cloud?

For myself, I’ve been giving this a lot of thought over the past 6-12 months, and recently I delivered a talk on the topic at CloudCamp London in July, called Captive Clouds Can’t Connect (the clue to the answer is in the title). I’ve been thinking about it some more this month because OpSource [important disclosure] is paying me to write a white paper related to the launch today of its enterprise offering. Together with Amazon’s announcement less than 48 hours ago of its Virtual Private Cloud, it has all brought this topic to a head.

http://blogs.zdnet.com/SAAS/?p=846

So what is the simple, blindingly obvious answer to my headline question?

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