High levels of integration with ICAS servers. The electronic and software architecture with the highest current development level is used in the new ID. family. It is called E3, which stands for end-to-end electronic architecture. It has two high-performance computers at its heart: ICAS1 and ICAS3, where ICAS stands for In Car Application Server. In conventional cars, the tasks performed by ICAS1 and ICAS3 were and still are distributed among a large number of smaller computers – the local control units. The ICAS modules raise the performance capability of the hardware and software to a level that opens up a completely new spectrum of possibilities.