The SDV stack is an operational model for vehicles that continue to change after production. It requires compute consolidation, stable APIs, secure updates and deep observability.
Central compute reduces fragmented ECU logic, while zonal controllers reduce wiring complexity and localize I/O. The architecture must still respect timing, safety and isolation requirements.
Automotive middleware exposes vehicle functions as services while hiding hardware variation. Interfaces must be versioned, monitored and compatible with update strategies across mixed hardware generations.
OTA is not just download and install. It requires campaign planning, dependency checks, fail-safe rollback, security validation and telemetry that confirms software health after rollout.