http://www.developer.com/java/ejb/article.php/887081/A-Peek-at-EJB-20-Part-1.htm
A few Internet eons ago, Sun Microsystems unleashed a new paradigm in server-side computing, namely Enterprise Java Beans. EJBs were specified as server-side components, i.e., modular, structured and loosely coupled pieces of code
A Peek at EJB 2.0, Part 1
September 18, 2001
Introduction