You can control message flows between services by using mediation policies: different mediation policies can apply in different contexts. This section shows some of the ways in which you can use mediation policies to control message flows.
Many enterprises would like to dynamically control their service interactions, by using context information.
You can develop new service interactions that achieve greater levels of flexibility and administrative control, using mediation policies. In addition, you can get new value out of existing systems by adjusting message flows according to the context in which they occur.
Existing services need to be accessed in constantly changing ways. You need to be able to govern service interactions, so that when circumstances change you can adjust the interactions rather than change the applications.
The mediation policy scenarios begin when an IT architect decides that a business has services or data that needs to be accessed more flexibly, and governed more centrally.
The development team uses WebSphere Integration Developer to develop applications that define and access mediation policies.WebSphere Service Registry and Repository (WSRR) is used to hold the SCA modules and mediation policies needed for the run time; WebSphere ESB or WebSphere Process Server is used to test, deploy, and administer the new applications.