The technology used to connect devices seamlessly in smart cities is known as Internet of Things (IoT). IoT involves the integration of various sensors, devices, and applications that communicate with each other over the internet. This interconnectedness allows real-time data collection and analysis, which enhances urban management and improves the quality of life for residents. Smart cities utilize IoT for applications such as traffic management, waste management, and energy efficiency. By leveraging IoT technology, cities can optimize resources, reduce costs, and create more sustainable environments.