Domain controller
An ECU that consolidates the functions of one vehicle domain — such as ADAS, cockpit or body — replacing many single-function ECUs.
A domain controller is an electronic control unit that consolidates the computing for one functional domain of the vehicle — typically ADAS, cockpit/infotainment, body and comfort, or powertrain — replacing the many single-function ECUs that previously handled those tasks individually.
Domain consolidation was the first major step away from distributed E/E architectures with 70–150 discrete ECUs. It reduced part count and enabled functions that need data from many sensors at once, such as driver assistance features that fuse camera and radar input.
Most roadmaps treat domain controllers as a transitional stage. As compute continues to centralize, domain controllers give way to zonal architectures with general-purpose central computers, where domains survive as software partitions rather than separate boxes. In practice, many current production vehicles run hybrid architectures: a mix of domain controllers, zone controllers and legacy ECUs.
Related: Central compute / HPC · E/E architecture · Zonal architecture