This book presents the latest scientific and technical advances in the fields of Smart Cities and Smart Territories. It shows outcomes of 2nd Sustainable Smart Cities and Territories International Conference in Manizales (Colombia) on June 21–23, 2023. The concept of smart cities, which emerged in the early 2000s, attempts to solve these challenges by implementing information and communication technologies. The initial concept of smart cities focused on the modernization of megacities.