A Smart City is an urban area in which digital technology is used to connect the infrastructure and services to improve the efficiency of the city’s operations and the quality of life of its population in terms of mobility, energy, security, housing, and more. This book describes the systems and the infrastructure requirements of smart cities and explores how the integration of the Green Internet of Things (G-IoT) and Artificial Intelligence (AI) help improve the efficiency and safety of cities’ systems, as well as reduce costs. The book provides useful information for researchers, policymakers, urban planners, and technology leaders.