Figure 3-8 A service oriented approach to building systems
Figure 3-8 illustrates a company that wants to implement a new business
process to support customers placing orders from a Web site. The company
already has existing retail, warehouse, and billing systems. It would like to build
the new process by reusing the functionality provided by those systems, rather
than having to write new applications or new interfaces to the existing systems.
If the company has already adopted an SOA approach, it has defined the
interfaces to its existing systems in terms of the functions, or services, that they
can offer ...
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