Gauthier Fanmuy is CATIA R&D Systems Portfolio Director at Dassault Systèmes. He is System Engineering Expert promoting methods for model-based systems engineering holistic approach in a digital thread, from Organization/System of systems to System product design. He comes from industry. He previously worked as Systems Engineering consultant and business developer, as well at PSA Peugeot Citroën and Dassault Aviation as a system engineer. He is involved international associations such as INCOSE and OMG. Gauthier is author of books and multiple articles, as well as a speaker in multiple conferences. He teaches Systems Engineering at ENSTA and Centrale Supelec Schools.