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The success of web services is changing the way in which software is designed, developed, and distributed. Services are in fact continuously re-designed and incrementally developed, released in heterogeneous and distributed environments. They are selected and integrated at runtime within external business processes. To ensure that a deployed service fulfils the QoS requirements, a Service Level Agreement...
We provide an approach that permits service developers and software adopters to evaluate service performance at design time, in a scenario where neither the service code nor (test-based) information on service execution times are available. Our approach builds on expert knowledge, service complexity evaluation, and the performance (retrieved by testing) of some reference services, to estimate the...
Accurate and rapid evaluation of web service performance is a key problem of Service-Oriented Architecture (SOA), where services are continuously being (re-)designed and released, and integrated within heterogeneous environments. Unfortunately, pre-deployment testing of services is not suitable to evaluate service performance at both design time and runtime. As a result, often process designers get...
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