Atos is a French multinational information technology 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. Atos operates worldwide under the brands Atos, Atos|Syntel, Atos Consulting, Atos Healthcare, Atos Worldgrid, Groupe Bull, Canopy, Maven Wave, and Unify.