Résumé en anglais

Smart City is a fuzzy concept that has not been clearly defined either in theoretical studies or in empirical projects. Smart Cities are based on Information and Communication Technologies (ICT), people (with their knowledge, habits, experiences, culture and behaviour) remain at the heart of concerns. In this chapter we are interested in the centrality of citizens (i.e. in the heart of the city) and of ICT in their environment. This leads us to take into account the tacit knowledge brought by citizens and the knowledge that may be divulged through ICT. We then present the concept of the Information and Knowledge System (IKS), and then we explain how it differs from that of the Digital Information System (DIS). We also point to the role of ICT in the DIS, and to their impact on improving the smartness of cities.