Web services are becoming the dominant paradigm for distributed computing and electronic business. This has raised the opportunity for service providers and application developers to create value added services by combining Web services. Several Web service composition solutions have been proposed, e.g. BPEL4WS. However, these approaches are either not flexible or too complicated as they lack proper support for modularity and reusability. Motivated by the demand of a light-weighted tool of service composition, we developed ServiceCom, a tool for service composition specification, construction and execution. In this paper we discuss how ServiceCom supports reusable Web service composition specification, combination, and execution.
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