Developing EJBs
What should be noted about EJBs is that an application server is required to develop and deploy these components. The Sun J2EE download from its Web site includes a development version of an application server, but this is not considered appropriate for a production environment. Application servers range in price from nothing for open-source products (JBoss) to mid-range prices (JRun and Orion) to high range (IPlanet, WebLogic and WebSphere). (The Web site www.flashline.com has a very good application server matrix, which includes a comparison of application servers, their EJB compliance, their prices, and most importantly, user reviews.)
Not all application servers that support the development of EJBs are considered EJB-compliant. ...
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