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Web Services and Service-Oriented Architectures: The Savvy Manager's Guide (The Savvy Manager's Guides) Review by W Boudville
understandable explanations
Barry gives a readable, high level explanation of Web Services and their latest incarnation - SOA. He contrasts the latter with the pre-existing EDI, which might use CORBA or DCOM. SOA is presented as much easier to make modular, without any strange binary formats. The virtues of using XML as the underlying data exchange format should be apparent to the reader.
He suggests how a company might want to redesign its data functionality so as to use an SOA approach. This can be confined entirely within the company's machines, or perhaps to offer Web Services to outsiders.