Gustavo Romanillos is Architect, urban planner, and PhD in Geography, his work focuses on the visualization, spatial analysis, and modeling of urban and social dynamics by applying Geographic Information Systems (GIS) and emergent technologies. He has a particular focus on cartography and the use of new and unconventional data sources with high spatio-temporal granularity. He is an Associate Professor at the Complutense University of Madrid (UCM), where he coordinates the Master in Smart and Sustainable Cities and directs the Diploma on Sustainability and Digitization. He has also taught at the Architectural Association School of Architecture in London, served as a Visiting Scholar at the Harvard Graduate School of Design, and has been a guest lecturer at universities across Europe and Latin America. As an architect, he has developed a wide range of projects, several of which have been awarded in international competitions. As a researcher, he is a member of the tGIS research group at UCM, and as a consultant, he has collaborated with major institutions including the United Nations Development Program, the Inter-American Development Bank, and the European Commission.