DE-SO, a prominent architectural firm founded in 2005 by François Defrain and Olivier Souquet. Specializing in cultural architecture, DE-SO also undertakes projects in landscape and urban planning, hospitality, sports, and educational facilities. The firm has earned recognition, including the prestigious Nouveaux Albums des Jeunes Architectes (NAJA) award. DE-SO's team comprises three associates and a collaborative network of around 30 architects and urban planners, emphasizing sustainable practices through technology integration, material optimization, and the promotion of bio-sourced materials.