Component technologies like Enterprise JavaBeans (EJB), COM + and CORBA Components (CCM) has become mainstream in many application domain. Developers and architects who use this technology in their daily work they need to know more about the infrastructure components of each technology API. The first part of this book is to introduce a pattern language that describes how the infrastructure component of server-side internal work. The second part of this book uses EJB technology to provide examples of more detailed patterns, including UML diagrams and extensive source code. After reading this book, you will: understand the principles and patterns of server-side component infrastructures can design their own components of your infrastructure for specific projects have learned about the similarities and differences between the EJB, CCM and COM + to obtain a comprehensive overview of EJB technology to see how server-side infrastructure components can be used to great advantage in a real applicationThe "comic" illustrations that accompany the pattern has been created by Stefan Schulz who, when not drawing, working as an independent technology consultant.