Cloud adoption is accelerating rapidly, driven by cost savings, agility, and efficiency. The Cloud is the long-held dream of computing as a utility. Developers with innovative ideas for new Internet services no longer require the large capital outlays in hardware to deploy their service or the human expense to operate it. There is no need not be concerned about over-provisioning for a service whose popularity does not meet predictions, thus wasting costly resources, or under-provisioning for one that becomes wildly popular, thus missing potential customers and revenue.