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Subject: RE: [ws-caf] Direct Data Exchange vs. SOA
Joe, I'd say you can have both. A direct data exchange can be accomplished using a service, and the SOA concept is pretty flexible about what can and can't be included as a service. Eric -----Original Message----- From: Chiusano Joseph [mailto:chiusano_joseph@bah.com] Sent: Wednesday, February 11, 2004 10:37 AM To: WS-CAF Subject: [ws-caf] Direct Data Exchange vs. SOA I have an inquiry that is not directly related to our mission here, but I hope to get some good insight in response please: Let's say we have a purchase order process between trading partners (PO sent, Invoice received). There are (for the purposes of this inquiry) 2 possible ways to handle this process: (1) Direct Data Exchange (create XML documents based on a common schema, and exchange them between trading partners) (2) SOA (have a purchase order/invoice shared service that is discovered in a registry, etc.) My inquiry is: What would drive an organization to use one approach or the other, from both a business and technical standpoint? For instance, would "critical mass of services and/or trading partners" be a driver for SOA vs. direct data exchange? Thanks in advance, Joe
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