These basic ideas make up the heart of Google App Engine. There's not that much to it. But that 's sort of the point to it... There's just this modest set of concepts and libraries built around them --- and that's it. But this simple framework turns out to be a remarkable and elegant tool for building your own cloud applications.
CloudBees as described by the official site:
The CloudBees Platform as a Service (PaaS) architecture provides a powerful foundation for cloud development and deployment services.
CloudBees as discussed in Linux for You
No special framework is needed for application deployment ...
Compare that with Mongrel, Passenger, Capistrano thingies.
Will making things tough, complex, tricky for others enrich me somehow?