Dynamic Architecture Adaptation in WS Environment

Coordination research aims to increase flexibility in software by constructing software from autonomous functional components, assembled and allowed to interact according to a separate and distinct coordination specification. Concepts of coordination and orchestration are increasingly included in standards for Web Services. Moreover, semantic WS specifications have emerged as the basis for automatic composition of services. In this paper we apply a coordination approach to the construction of web services that enables clients to specify substantial adaption of web service behavior, in order to better integrate with client requirements. We illustrate by way on a simple example how this approach can be practically applied and propose platform support for dynamic runtime adaption of web services.