OPUS – La Défense

Join the app OPUS – La Défense and enjoy many services directly from your mobile. Opus12 is a simple, practical & secure application to stay informed and communicate within a building. The application allows you to : - follow what's happening at Opus12 in real-time, with your building's news - to chat with other building's occupants via messenger or a forum - benefit from services to simplify your daily life: concierge services, reservation of common areas or goods and all other third-party services integrated into the app.