Japanese automotive giants Nissan and Honda have signed a joint development agreement to create shared computer hardware and software for vehicles, with formal deployment targeted for fiscal year 2029. The partnership focuses on software-defined vehicles (SDVs) using standardized core Electronic Control Units (ECUs) and shared software platforms—a strategy to reduce costs, accelerate development cycles, and achieve economies of scale in a globally competitive smart mobility market. This mirrors similar consolidation moves by European automakers (Volkswagen, BMW, Mercedes-Benz, Stellantis) and represents a strategic counter to Toyota's ongoing EV and autonomous tech partnerships.