International audienceSpatial Data Infrastructure (SDI) appears nowadays as an essential driver of institutional data diffusion. Due to the dual impact of systems interoperability and changes in the legal framework, institutional spatial data tends to become more and more accessible through widespread deployment of SDI at every scales. In this context, the French research program “GEOBS : Spatial Data Infrastructure in the informational governance of environment" (2015-2017) lead by the French National Centre for Scientific Research (CNRS) aim to make spatial data infrastructure not just a research tool but a real object of research for a better understanding of the flow of environmental information. To do this, we develop a prototype obser...