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HIGHLIGHT AND THWARK THE ISSUES OF WEB SERVICES OVER TELCOMMUNICATIONKeywords: Web services publishing and discovery , metadata of services interfaces , advanced services invocation framework. Abstract: The current service-oriented solutions are often not as dynamic and adaptable as intended. The publish-find-bindexecute cycle of the Service-Oriented Architecture triangle is not entirely realized. This paper highlights some issue of current web service technologies, with a special emphasis on service metadata, Quality of Service, service querying, dynamic binding, and service mediation. The Vienna Runtime Environment for Service-Oriented Computing (VRESCo) gives the addresses these issues. The detailed descriptions of the different aspects are focussed on service querying and service mediation. Finally, the paper presents a performance evaluation of the different components, together with an end-to-end evaluation to show the applicability and usefulness of the system.
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