David is a recognized expert in the direct and indirect environmental impacts of digitalisation since 2019, he has been involved in developing assessment methods for the sector. He has led several landmark studies for ADEME and, among other things, chaired the peer review of the Mistral environmental study. His interdisciplinary PhD thesis contributes to the state of the art in computer science, engineering, and the humanities and social sciences. David has authored several notable scientific articles, notably on the environmental footprint of GPUs and on the limitations of methodologies for calculating the environmental benefits of digital technology, for which he received the ‘Best Paper’ award at ICT4S 2024. He teaches at the School of Public Affairs at Sciences Po Paris.