Hackability means never having to say "it can't be done".
Amazon currently dominates the cloud computing industry it created by allowing for easily scalable and granularly billed computing time. Microsoft's Azure platform and Google's Cloud Engine (not their App Engine) are welcome competition. But then there is RedHat, a server giant which has been merely lurking, and is now trying to attract people to their own platform (or platform offerings), like the PaaS they host called OpenShift Online.
OpenShift itself is free software (which is at openshift....