Technologies that support the function of smart city infrastructures include the Internet of Things (IoT), big data analytics, and cloud computing. IoT devices collect real-time data on various aspects such as traffic, energy consumption, and environmental conditions, allowing for better management of urban resources. Big data analytics processes this extensive data to provide insights for decision-making, enhancing city services and planning. Cloud computing supports scalability and accessibility, enabling centralized data management and application hosting. Together, these technologies create more efficient, sustainable, and livable urban environments.