snydeq writes: "Andrew C. Oliver and Lifford Pinto detail the ups, downs, ins, and outs of deploying a legacy Java application to 7 leading platform-as-a-service clouds, including Amazon Elastic Beanstalk, CloudBees, Google App Engine, Heroku, Microsoft Azure, Red Hat OpenShift, and VMware Cloud Foundry. The writeup includes a look at key differentiating features, lock-in, security, and the kinds of companies using each PaaS. 'It's still a bit early in the PaaS space, but you can already begin porting legacy apps to some cloud platforms with only minor changes or possibly none at all. Big companies and small companies alike may find a PaaS to be a compelling way to deploy applications and cut capital expenditures. This market isn't as crowded as it might seem, as many of the big players aren't yet out of beta. But in the coming months we can expect that to change.'"