ISAM is a proposal directed to supporting physical and logical mobility, context-awareness, dynamic adaptation and the execution of large-scale distributed applications. In order to achieve its goals, ISAM uses, as strategy, an integrated environment that provides: (a) a programming language; (b) an execution environment; (c) a context recognition server. The integration is accomplished through an adaptation process that uses a multilevel collaborative model, in which both the system and the application contribute for that. In this paper we discuss the main components used to implement the ISAM features, and we also present a distributed application that explores some of this features.