Customs systems need to exchange electronic data and to communicate with neighbor administrations (across the borders), inter-national agencies (for example EC), other national agencies, traders. etc. Interoperability of the customs systems is important because: it is required by the standards of Customs Blueprints it is needed for national integrations like Single Window and IBM it is needed for integration with EU systems like EMCS, NCTS, ECS/ICS, AEO, etc. (listed in MASP) The aim of this project is to find an ECN (External Communication Node) solution for the Customs Administrations of…