Smart City is a recent concept that is gaining momentum in public opinion, and thus, it is making its way into the agendas of researchers and city authorities all over the world. However, there is no consensus of what exactly is a smart city, and academic research is, at best, building applications in numerous silos. This paper explores the computer science and information technology literature about Smart City. Using data analysis techniques, we contribute to present the domain from an objective data-based point of view, aiming to highlight its major trends, and providing a single entry point for newcomers.
