- Definition: Service-Oriented Architecture (SOA)
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A method of architecting IT-supported business operations in terms of shared business services as opposed to the more traditional application silos. Software components are linked together to form business services, delivering discrete pieces of business functionality such as "Get Customer Details" or "Calculate Invoice." The flow between components may be dynamically altered based on business rules and policies. These business services are made available through a standard interface in such a way that the caller is shielded from knowing anything about the operating environment of the service. SOA therefore provides an architecture to promote reuse as well as business flexibility and adaptability, while improving business visibility by organizing IT resources with business rather than technical boundaries.
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