Mobile terminals and networks recent evolution increase the interest for new services.These services must be dynamically adapted because the context (user profile, localization,terminal and network resources, etc.) may change at runtime. The existent solutionsuse an adaptation control based on service-specific rules and strategies. Because of this, aservice will not work correctly in a context that was not anticipated by the rules creator.Our proposition consist in an adaptation platform that uses a service-context description inorder to analyze if a service works correctly in a given context, to find the problems and thesolutions. In order to adapt a service we reconfigure its architecture by inserting, replacingor moving components.