Service oriented computing-11


Service-oriented computing (SOC) is the computing paradigm that utilizes services as fundamental elements for developing applications. SOC involves the service layers, functionality, and roles (see the sidebar “Services Overview”) as described by the extended service-oriented architecture (SOA) depicted in the figure here. Basic services, their descriptions, and basic operations (publication, discovery, selection, and binding) that produce or utilize such descriptions constitute the SOA foundation. The higher layers in the SOA pyramid provide additional support required for service composition and service management. The service composition layer encompasses necessary roles and functionality for the consolidation of multiple services into a single composite service. The resulting composite services may be used by service aggregators as components (basic services) in further service compositions or may be utilized as applications/solutions by service clients. Service aggregators thus become service providers by publishing the service descriptions of the composite service they create. Service aggregators develop specifications and/or code that

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