Cities are the core of modern society. Humans civilizations have been transformed for plenty of years and are still under development. From a multi-set of cultures, knowledge has been passed throughout generations and now it is carved in a sea of big data mined by high performance computers. Guided by these technological transformations, this book presents novel insights about the use of computational intelligence tools aligned with a social science perspective. In the faith that data and information are the path for an advanced society, we believe that digital and smart cities summarizes a need of our generation.