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Achieving goals of better integrated and responsive e-business services requires moving away from stand alone applications toward more comprehensive, integrated architectures. But there is mounting pressure to move from disparate systems operating in Parallel toward a shared architecture designed to support information exchange and cross-agency business processes. The paper presents a designing approach based on SOA and the main technology of implementing SOA by web services. SOA is a methodology to build and manage IT system and business processes. It supports information sharing and integration of business processes. In this way SOA can achieve the integration of applications in new generation e-business.
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