Search for: [Description = "The problem of providing support for quality of service \(QoS\) guarantees is studied in many areas of information technologies. In recent years the evolution of software architectures led to the rising prominence of the Service Oriented Architecture \(SOA\) concept. For Web\-based systems there are three attributes that directly relate to everyday perception of the QoS for the end user\: availability, usability, and performance. The paper focuses on performance issues of service delivery. The architecture of Virtual Service Delivery System \(VSDS\), a tool to serve requests for synchronized services is presented. It is proposed suitable monitoring technique used for estimation of values of service parameters and allocation of communication and execution resources by means of service distribution. The paper also presents results of experiments performed in real environment that show effectiveness of proposed solutions."]

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