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One question that is raised in my mind is whether the large projected savings in money and energy resources carries over to business smaller than the ones surveyed. Of course, pretty much all business are smaller than Boeing, Citigroup, Deutsche Bank, et al. The companies surveyed also seem to be the type that require serious computing power, so I wonder if that skews the results as well. Even so, I don't think there is much doubt that a cloud model has cost benefits for smaller companies, and not needing to cool a data center would certainly result in some energy savings.