Platform-as-a-service is one of the toughest types of cloud offerings to understand, but provides some of the most promise - especially for startups. We've looked at the confusion and the promise before. But what about the enterprise? We looked at the Forrester Wave on PaaS recently, and it had more of an enterprise focus. But it also highlighted that the market is still young.

And what about private clouds? We looked at one option for building private a PaaS, Apprenda, recently. Microsoft Azure and Vmware Cloud Foundry will provide similar options. It's a new but growing area.

Do you think PaaS, public or private, has a role to play in the future of the enterprise?