Digitalization fosters the emergence of new data, behaviours and services in the traditional areas of public policies: water, mobility, energy, waste, etc. To develop a prospective approach to the "smart diffuse city", we explore the positive and negative sides of the "digital revolution" from an internationally comparative perspective: How does the use of new data help to fill gaps in the knowledge and modelling of diffuse urbanization? How can new data help public and private stakehold...