The service interface is available in the Enterprise Services Repository.
When you create a service interface (SI) in the Enterprise Services Repository, you can use it as a base to create applications for AS Java. These applications - Web service providers and Web service consumers - use the Integration Server (IS) as a broker as shown in the figure below.
The Web service providers and consumers can communicate with the IS over the Web service protocol by using the PI WS adapters. You can use this adapter both for synchronous and asynchronous communication.
Use a synchronous or asynchronous Web service provider for brokered communication. In this case, the IS can be viewed as a service consumer. For more information, see Web Service Providers for Brokered Communication .
Create and configure a synchronous or asynchronous Web service consumer for brokered communication. In this case, the IS can be viewed as a service provider. For more information, see Web Service Consumers for Brokered Communication .