Digital mock-ups play a key role in managing the entire lifecycle of a building. Inspired by the BIM and PLM approaches, it makes it possible to model data in 3D, while centralising it for all those involved in the project. As a result, architects, design offices, electrical engineers, fluids engineers and building services engineers can work efficiently together around a single database. Thanks to this approach, duplication is eliminated, consistency is ensured, and each stage of construction is better controlled.