In order to reuse the logic in different tools, easily callable and loosely-coupled information services need to be in place.
为了重用不同工具的逻辑，需要有易于调用且松耦合的信息服务。
2
With the emergence of Web services, the back-end enterprise applications are exposed as discoverable and callable business services through the use of WSDL.
随着Web服务的出现，后端企业应用程序通过使用WSDL被公开为可发现并可调用的业务服务。
3
These functions can be grouped as composable components and provided as reusable and callable Web services.