Many firms are migrating their information technology resources to the cloud. But the choice between a fixed consumption model and a variable consumption model can make a big difference for a company. In addition, the decision to use a public cloud, or create a private one, will also be important. There are ramifications of both decisions.
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http://searchcloudcomputing.techtarget.com/news/2240222079/Consumption-model-makes-or-breaks-cloud-migration
