I am working on the same project as hilmer, and I would like to answer the above questions: We currently have about 290 stateless session beans and no other kind of beans. Most of them have references via @EJB to 1-4 other beans. We have about 5 servlets and some special beans, which have more @EJB annotations in the order of 10-20. We use both @Resource and @PersistenceContext; @Resource not so often, but we do have quite a few DAOs with references to EntityManagers. The number of methods per bean varies a lot, but it certainly fit into the range 2-20, where 20 is very rare. Typically in the order of 9 methods. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4228824#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...