Journal of Information Organization Faîçal Felhi, Jalel Akaichi 5 1 2015 http://www.dline.info/jio/fulltext/v5n1/v5n1_1.pdf Web services are a solution for the integration of distributed information systems, autonomous and in real time, heterogeneous and auto adaptable to the context. These impact can resolve many problems in different system based on SOA and Web services. In this paper, we are interested in defining an approach to provide the different needs of a self-adaptability of Web services to context based on workflow and present its performance through an evaluation study, define the real time goal in our approach and showing the feasibility of this approach in an e-healthcare study.