Chapter 9. Event-Driven Architecture for Super Decoupling

SOA is about decoupling and reuse, leading to business agility. In the previous chapters we have seen many examples of decoupling, both within and between our SOA composite applications, as well as between these composites and external services and systems.

The use of XML and Web Service standards is good for decoupled interoperability across heterogeneous technology stacks—for example, file systems, databases, Java applications, packaged applications, and SOA Suite. The integration between service components based on the WSDL contracts and the SCA infrastructure allows us to use the best tool for the job—Business Rules for business logic, Mediator for routing and transformation, BPEL for stateful processes, and technology adapters to leverage functionality in other platforms.