Application Interface Application Service Application A Application Component Function Data Object O 1. The application interface supports the application service whilst the application function realises the application service. The application component supports the application function. Finally the application interface is assigned to and makes use of the application component. One can therefore conclude that it is true that the application interface supports the value proposition of the application function and that the application component supports the value proposition of the application service. Without the application component and the application interface, the application function and therefore the application service would be deficient. O 2. The application interface supports the application service whilst the application function realises the application service. The application component supports the application function. Finally the application interface is assigned to and makes use of the application component. One can therefore conclude that it is true that the application interface supports the value proposition of the application function and that the application component supports the value proposition of the application service. However, it is not true that an application interface or the application component is required for the application service to be realised. Only the functionality of the application function would be required to realise the application service as the service is existence dependant on the function. O 3. The application interface supports the application service whilst the application function realises the application service. The application component supports the application function. Finally the application interface is assigned to and makes use of the application component. One can therefore conclude that it is true that the application interface supports the value proposition of the application function and that the application component supports the value proposition of the application service. Without the application component or the application interface, the application function and therefore the application service would be deficient. However the application service would still be dependant only on the existence of the application function and not the interface or the component. The application and component merely supports.