We've just posted a new article on how to Deploy a Java EE Web Application to Open Shift Express using JBoss AS 7. You can read the entire article here.
According to jboss.org:
"Express offers the fastest on-ramp to the cloud. Simply install the command-line tools, create your application and deploy to the cloud with Git. It's that easy! Express is a service that leverages a shared-hosting model with SELinux to ensure security at multiple levels."
