IXXI is a research center located at ENS Lyon. It associates national research institutes (CNRS, INRIA) with local universities to promote research at the crossroads of different disciplines to address contemporary challenges. Networks are at the heart of our interests, from network science to the analysis of the impact of the digital revolution on economy or social organisation. IXXI is structured around a lab with resident teams, the animation of a regional community around emergent projects, as well as master classes.