In this chapter, we talked about integration architecture, specifically about application integration. We discussed point-to-point antipattern, request/response with workflow, guaranteed delivery, and message broker patterns. For guaranteed delivery and the request/response with aggregation patterns, we compared different candidate technologies from several perspectives. We have chosen the leading technology and provided working examples.

We introduced the notion of the ESB.

In the next chapter, we'll talk about web services and RESTful services. We shall also see how ESB can provide the basis for service-oriented architecture.