You can associate your web services with the service integration bus, to achieve the following goals: make internal services available as web services; make external web services available internally at bus destinations. Bus-enabled web services also provide a choice of quality of service and message distribution options for web services, along with intelligence in the form of mediations that allow for the rerouting of messages.
Web services can use the service integration bus to provide a single point of control, access, and validation of web service requests and allow control of web services that are available to different groups of web service users.