This glossary supports the following titles: SOA: Principles of Service Design (ISBN: 01323 44823, Prentice Hall) Service-Oriented Architecture: Concepts, Technology, and Design (ISBN: 0131858580, Prentice Hall) Service-Oriented Architecture: A Field Guide to Integrating XML & Web Services (ISBN: 0131 428985, Prentice Hall) For more information about this book series, visit: www.soabooks.com composition initiator Whereas a composition controller service is responsible for encapsulating and carrying out composition logic, it is not necessarily responsible for initiating the composition. Often a separate service consumer program exists that acts as the initial sender of a message path by sending a command or input values to a composition controller. In relation to the overall composition, this program is referred to as the composition initiator. Composition initiators may or may not exist as services or service-oriented solution logic. They may simply be legacy or external applications that interact with services or a service-oriented solution. They are relevant because their exchanges are part of the overall service activity. See also: - complex composition - composition controller - composition controller capability - composition member - composition member capability - composition sub-controller - service activity - Service Composability - service composition

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