In the previous chapters we built integrations that primarily had one source (trigger) and one target (invoke) service connection. Within some of our integrations we extended this by introducing enrichment services and chaining integrations using the publish/subscribe pattern. This kind of service could be called after the message was received by the source connection or after receiving the response from the target connection, just before sending the response back to the caller of the source connection. Between these service calls we transformed the message so that the message was in the correct form to be understood by the receiver of the message.

In the previous chapters you might have noticed that we were restricted in making different decisions based on the message content and the limited possibility of chaining service calls.

In this chapter we want to introduce you to orchestration. In Chapter 1, Introducing the...