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Article

Title: A Look Ahead to the Service-Oriented World

Author: Erl, Thomas Article Type: Product Analysis
Source: WebLogic Developer's Journal, v4 n2 p12(3) Publication Date: Mar 2005
  ISSN: 1535-9581
URL of Publication: http://www.weblogicdevelopersjournal.com

A working definition of the emerging concept called the service-oriented architecture is presented. Two problems in arriving at such a definition are the way SOA is different from standard distributed architectures that employ Web services and another is the issue of defining what the SOA paradigm includes. A key concept is the phenomenon of decomposition, which maintains that any unit is more effective if divided into well-defined collections of related units. In the service-oriented architecture, individual logic units can evolve independently while maintaining a fundamental level of commonality. Business processes are comprised of a series of steps with logical boundaries. Loose coupling provides a structure for communications between services. Messaging, under the SOA scheme, can be conducted either synchronously or asynchronously. Basic concepts of SOA include the reusability of services, that these services must share a formal contract, be loosely coupled, and be based on an underlying logic. Services must also be composable, autonomous, stateless, and discoverable.

Products:
SOA (Service Oriented Architecture)

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