  Distributed information systems are needed to be autonomous, heterogeneous
and adaptable to the context. This is the reason why they resort Web services
based on SOA Based on the advanced technology of SOA. These technologies can
evolve in a dynamic environment in a well-defined context and according to
events automatically, such as time, temperature, location, authentication,
etc... This is what we call self-adaptability to context. In this paper, we are
interested in improving the different needs of this criterion and we propose a
new approach towards a self-adaptability of SOA to the context based on
workflow and showing the feasibility of this approach by integration the
workflow under a platform and test this integration by a case study.
