All you need to know is JBossAS 4.2.3.GA is the latest community version (.org) JBoss EAP 4.2/4.3 is the latest supported version (.com) EAP originally included AS 4.2.1.GA. Through a consistent patch process the EAP version contains most bug fixes from the .org side of things, and more (e.g. customer requested/specific fixes that made it only on the supported EAP product). If you are happy being on your own with the support you can get from the community, you'll use the latest JBoss AS. If you want a product with commercial production support from JBoss/Redhat and specific SLAs, you need to use the latest EAP 4.3 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4174070#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...