An arrangement for transferring message based communications between separate disjunctive components. The arrangement includes at least two components. At least a first component is arranged to provide services to at least one second component and/or to an operator of the loosely coupled system. At least one message bus is arranged to perform real-time transfers of communications from/to the at least one first component to/from the at least one second component. The at least one message bus is connected to or integrated in an internal communication backbone arranged with a communication member for establishing outgoing communication links. A predetermined message based interface is arranged relative to each of the components and the at least one message bus such that all communications between the at least one first component and the at least one second component are defined in the same single standardized message language. A method for providing components in the arrangement and a platform including the arrangement.