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Unformatted text preview: 223 Service Oriented Architecture • Service Oriented Architecture ( SOA ) is an architectural style that guides all aspects of creating and using business processes – Packaged as services – Throughout their lifecycle • It deFnes the IT infrastructure that allows different applications to exchange data and participate in business processes – Only loosely coupled to the operating systems and programming languages underlying those applications • SOA represents a model in which functionality is decomposed into small, distinct units (services), which can be distributed over a network and can be combined together and reused to create business applications • These services communicate with each other by passing data from one service to another, or by coordinating an activity between two or more services • The concepts of SOA are often seen as built upon, and the evolution of, the older concepts of distributed computing and modular programming 224 Web Services • The W3C defines a Web service or Web Service as "a software system designed to support interoperable Machine to Machine interaction over a network" • Web services are frequently just Web APIs that can be accessed over a network, such as the Internet, and executed on a remote system hosting the requested services • The W3C Web service definition encompasses many different systems, but in common usage the term refers to clients and servers that communicate using XML messages that follow the SOAP standard...
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This note was uploaded on 12/07/2009 for the course MGMT E-110 taught by Professor Koltz during the Summer '09 term at Harvard.
- Summer '09