Java platform as a service for cloud

I used to think about the alternatives for Google platform for the java world and came across CloudFoundry today. They provide the java stack, similar to SpikeSource' LAMP stack, on the cloud. Though the stack is not very flexible for various types of Java apps (4 layer models, server types, EJBs etc) - it works for the common deployments. You just make the .war file and upload it - watch it to get deployed in a couple of minutes.