The need for enterprise integration is widespread for the simple reason that businesses require independent applications to exchange information with each other. A CRM application must know about the order history of a customer, but that history is stored in the sales application. A technology that companies increasingly use to integrate enterprise applications is the Enterprise Service Bus (ESB). Open-Source ESBs in Action describes how to use ESBs in real-world situations. You will learn how the various features of an ESB such as transformation, routing, security, connectivity, and more can be implemented on the example of two open-source ESB implementations: Mule and ServiceMix. The authors first introduce ServiceMix and Mule, and then present general principles and patterns of ESB use, as well as a structured approach to solving common integration problems, through examples using them. Working in integration projects is exciting, with new technologies and paradigms arriving every day. In this area, open source is playing a more and more dominant role with projects such as Mule and ServiceMix. Open-Source ESBs in Action will help you to learn open-source integration technologies quickly and will provide you with knowledge that you can use to effectively work with Mule and ServiceMix.