Foreword
Enterprise service bus is a loosely defined term, and lots of products are claiming to implement the ESB concept. This concept is covered in depth in the first chapter of this book; in short, the goal is to provide a distributed and reliable mediation framework that the different systems in an IT environment can use to communicate, thus removing the need for a given system to know how to talk to the others in a specific way. Integration, which is what ESBs are about, is complicated: Each time you add a system, it needs to talk to all the other systems, and ad-hoc integration between the systems has long been considered a bad solution.
The concept of EAI emerged as a solution, but it led to another set of problems related to using a ...
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