Web Service
In order for business to free itself from technology, the business logic must be separated from the plumbing.
Web service technology is what allows us to make this separation, creating business service components from business applications. The business logic sits above the plumbing in the business services layer. These business service component bring to the business the same efficiencies of reuse, ease of change, and consistency of results as Web Services do on the programming level. And this is a big deal. The business service layer ensures that the business can respond quickly to the new opportunitites by making changes to business services without having to change the plumbing. Business can change without rewriting the world because business components, like stereo components, can be swapped in and out as needed.
– SOA for dummies
