A digital city is connected to the internet, and is equipped with technological platforms for information and communications management that can enable objects to communicate through the Internet of Things (IoT). A smart city, on the other hand, is a complex system that uses digital and communications infrastructure to manage systems such as traffic control, parking, lighting and many others. The two concepts are closely connected: to be ‘smart’, a city must be digital, since it must integrate information and communications technologies (ICTs) into its networks, services and infrastructures. Therefore, a city cannot be ‘smart’ without first being digital. By making it possible to gather and process huge amounts of data and information, digital platforms furthermore enable offering new services to city dwellers as well as new functionalities for improving management of urban environments and enhancing quality of life.