Stations handle millions of journeys every day, but their potential as intelligent infrastructure has gone largely untapped. By layering AI and real-time data onto physical infrastructure, SNCF is building a "station OS" — a connected operating system that optimizes passenger flows, reduces energy consumption, and coordinates operators, citizens, and services in a shared urban space. How does a legacy infrastructure giant become a platform for open innovation and sustainable mobility? And how do you attract the tech talent to build it — when your product is a train station?