System and method for transmitting messages between first and second software components such as application software and software of a platform for a product. An exemplary system includes a platform having a software component and an interface component having an interface for providing an application or a module in an application domain with access to the software component. The system further includes a message transmitting mechanism for transmitting messages between the application or the module and the platform via the interface that includes a message model for allowing an application to select either a callback mode or a full message mode for receiving messages between the application or the module and the platform, and a message handler for routing messaging according to the selected mode.