hitachi-mainframe-exit-forces-regional-banks-to-rethink-core-systems

Watchers of Japan's financial infrastructure should note this: Hitachi's late-May decision to end sales and support for its bank mainframe OS slams shut a decades-old door, forcing regional banks still on its hardware into an unavoidable choice, costly in-place renewal or full migration. Core banking systems run deposits, loans and transfers, so banks delay touching them as long as possible. Hitachi's exit turns 'later' into a deadline. Toyo Keizai tracks which banks are preparing to move and where, other mainframes, open systems, or shared cloud cores. It is both a heavy IT bill and a rare reshuffle of the vendor map.