One of the factors behind the increasing share of software in the vehicle are changes in end customers' expectations for future passenger cars. Drivers want to use additional and assistance functions differently: with flexible activation and paying when needed, immediately and without having to drive to a workshop. They want access to the apps on their own smartphones seamlessly, even in the car; or they no longer want to own vehicles themselves, but rather book them at short notice via mobility apps. The software-defined vehicle (SDV) is the answer to many of these wishes for the future.