Atos is a French multinational information technology (IT) service and consulting company headquartered in Bezons, France and offices worldwide. It specialises in hi-tech transactional services, unified communications, cloud, big data and cybersecurity services.[3][4] Atos operates worldwide under the brands Atos, Atos-Syntel, Atos Consulting, Atos Healthcare, Atos Worldgrid, Bull, Canopy, Unify and Worldline.