The world is flat, hot and crowded, as Thomas Friedman says in his last book. Luckily, we can also say that it is getting more and more intelligent. Our world is increasingly interconnected and increasingly able to talk to us: people, systems and objects can communicate and interact with one another in completely new ways. Now we have the means to measure, hear and see instantaneously the state of all things. When all things, including processes and working methods, are intelligent, we will be able to respond to changing conditions with more speed and more focus, and make more precise forecasting which in turn will lead to optimization of future events. This ongoing transformation has given birth to the concept of Smart Cities, cities that are able to take action and improve the quality of life of their inhabitants, reconciling it with the needs of trades, factories, service industries and institutions by means of an innovative and pervasive use of digital technologies.