
40 WebSphere and .Net Interoperability Using Web Services
4.1 Web services concepts
Web services are self-contained applications that are published, located,
described and invoked over the Internet or intranet.
Web services perform business functions, ranging from a simple query to
complex business process interactions. A Web service can be built from the
ground up as a new application or an existing legacy system can be
re-engineered to make it Web service enabled.
There are three main participants in the generic Web service pattern.
Figure 4-1 Web services roles and operations
1. The service provider creates and hosts a Web service and possibly ...