With Cloud Foundry, OpenShift, and various cloud-washed legacy virtualization stuff like vCloud, it's time to take stock of who's winning the private PaaS (platform as a service) race. Enterprises continue to resist putting their code in the public cloud -- sorry,Amazon, App Engine, Azure, CloudBees, and Heroku -- leaving private cloud PaaS as the modern, practical alternative to the good old application server.
The vCloud stuff is certainly being used, but not by itself (and advertises itself as IaaS). OpenShift and CloudFoundry are well hyped -- but what are most people doing? In the end, one product is used more than any other in implementing an on-premise PaaS: Puppet.