The significance of the Internet of Things (IoT) in smart cities lies in its capability to enhance urban living through interconnectivity and data exchange among devices. IoT technology facilitates real-time monitoring of infrastructure, traffic patterns, and environmental conditions. This information allows city planners to optimize resources, improve public services, and promote sustainability. For example, smart traffic lights can adapt to live road conditions, reducing congestion. Additionally, IoT can support energy conservation by managing utilities based on real-time usage. Ultimately, IoT plays a crucial role in creating more efficient, livable, and sustainable city environments.