Publish/Subscribe Messaging Can Be Simple with WebSphere MQ

essage-oriented middleware (MOM) decouples applications by allowing them to communicate using one of two messaging models: point-to-point messaging and publish/subscribe messaging. The models differ in fundamental ways, but neither requires applications to know the other’s implementation details.

Point-to-point messaging achieves only partial decoupling of applications, because you still need to know where to put messages. Publish/subscribe provides a higher degree of independence and reduces design complexity in many cases, but it requires more coding and configuration. Traditionally, MOM shops have opted for point-to-point messaging to avoid the more complex requirements of publish/subscribe.