Fundamental Design
Terminology and Concepts
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Elements of
Service-Oriented Computing
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Goals and Benefits of
Service-Oriented Computing
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Service-Oriented Computing
in the Real World
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Elements of Service-Oriented Computing
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Services and Service-Orientation
Service-orientation is a design paradigm comprised of a specific set of design principles. The application of these principles to the design of solution logic results in service-oriented solution logic. The most fundamental unit of service-oriented solution logic is the service.
Services exist as physically independent software programs with specific design characteristics that support the attainment of the strategic goals associated with service-oriented computing. The following figure introduces the symbols used by this site and the book series to represent a service from an endpoint perspective.
Figure: The yellow sphere symbol (left) is used to represent a whole service and the chorded circle symbol (right) is used to express a service and its capabilities.
Each service is assigned its own distinct functional context and is comprised of a set of capabilities related to this context. Those capabilities suitable for invocation by external consumer programs are commonly expressed via a published service contract (much like a traditional API).
Figure: The individual description documents that can comprise a service contract for a Web service.
For a more comprehensive exploration of services and service-orientation, visit www.soaprinciples.com.
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