This document specifies the backend interface between CMP and MSP which allows to facilitate the account federation. The account federation enables the individual to provision their mobile subscription along with content and automotive services into multiple cars through a unified login.
In addition, this document also specifies the interface between the CMP backend and the CMP app on the vehicle (also referred to as the car OS). The aim here is to simplify the integration of vehicles with the backend of different CMPs. This would allow to integrate one vehicle design with the backend of different OEMs (e.g. when the vehicle is designed for different brands in an OEM cooperation) or to integrate the vehicle with other CMPs who are not the OEM. An example here could be rental car or car sharing companies who provide the AiD service for their fleet.