SAVVY-WS at a glance: Supporting verifiable dynamic service compositions

Service-oriented architectures support the development of distributed and evolvable applications that live in an open world. We focus on Web service compositions through which new added-value services are provisioned by integrating pre-existing services through a workflow. We assume that such pre-existing services can be selected and bound at run time to support continuous evolution and contextual adaptive policies. We illustrate a methodology and a set of tools supporting both design-time and run-time verification of service compositions.