This report examines the integration of the Internet of Things (IoT) in the development of smart cities. It begins with an abstract that highlights the use of IoT for smart city infrastructure, emphasizing the role of smart devices, big data analytics, and interoperability. The introduction details the technological advancements that drive smart city growth, including economic benefits, improved employment rates, and environmental sustainability through interconnected IoT devices such as smartphones, traffic lights, and surveillance cameras. The purpose of the report is to design an IoT-based smart city infrastructure, focusing on smart services for citizens, sensor networks, and security enhancements. The problem statement outlines the need for interconnected devices for effective communication and the advantages for city residents. The conclusion reinforces the importance of IoT in coordinating devices, improving efficiency, and boosting economic growth through smart systems. References include academic papers and research reports on IoT and smart city applications.