Structure 2010: Lowering Barriers for Platform-as-a-Service.

The idea of renting servers by the hour is one of the simpler cloud computing concepts to grasp, according to Lew Moorman, president and chief strategy officer for Rackspace. But providers of what’s called platform-as-a-service, or PaaS, face a problem: How do you make it easy for users to grasp the idea of paying for “pieces and slivers” of a platform — the layers of technology underlying a software application?

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