QoS4WSC: A Framework for Web Services Composition Based on QoS Constraints
Web Services Composition (WSC) is a paradigm for enabling application integration within and across organizational boundaries. Nowadays, the main challenges of WSC in environment like Internet are to ensure high quality execution. Former works on service composition have enabled the elaboration of the BPEL4WS standard. Nevertheless, the management of the Quality of Service (QoS) of service composition, generally defined in Service Level Agreement (SLA), was not taken into account. Therefore, it is mandatory to built flexible solutions, reusable, and offering a suitable level of abstraction. The authors propose a new framework, called QoS4WSC, that evaluates constraints-based response time in WSC.