What is orchestration? What does it mean to build composite applications? Why would anyone want to?
Existing systems are not going away. Yet enterprises need to build new applications that can leverage the functionality encapsulated in those existing systems. The notion of a composite application is based around the idea of building new applications by wiring together existing building blocks. Orchestration plays an important role in this picture because it is the glue that coordinates the execution of each discrete service. A good orchestration server needs to be reliable, scalable and render the BPEL process logic with very high fidelity.
