oBay high-level architecture
Now that we have our blueprint for SOA, let us apply it to the business requirements of oBay. By doing this, we come up with the following high-level architecture:
We won't go into this in detail at this point (as we do that in the remainder of this section), but it's worth looking at each layer and highlighting a few significant features.
oBay application services
As you will see from the previous diagram, we have broken out our Application Services into three categories, namely, oBay Developed Services, External Services, and Workflow Services. Each of these raises some interesting points, which we examine further later. ...
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