This paper describes the realization of a business-to-business intermediation e-commerce platform. The main concern derives from the combined usage of two emerging technologies, namely the Java 2 Enterprise Edition (J2EE) and the Mobile Agent Technology (MAT). The key issues that are addressed in this paper are the following. First, the scenario of the proposed system. Second, the definition of the required functionality and its design by means of appropriate service components based on J2EE principles. Third, the exploitation of agents in terms of their detailed design and implementation activities. Finally, the evaluation of the two interoperable technologies.