Dimitri Sarafinof is head of standardization department at the National Institute of Geographic and Forest Information (IGN). Dimitri Sarafinof has been involved in standardization for geography for more than 15 years. He is an international expert in his domain (3D modelling, web services …), being involved in technical committee 211 of ISO, Open Geospatial Consortium, and other defence specific standardization working groups, both at a technical and at a strategic level. In addition to this, he is now leading the setup of the national digital twin project in IGN. This national project aims at providing a national virtual replica of France and its territory, in support to the ecological transition and public policies by offering notably simulations capacities.