This document discusses how IoT can be used to create a smart city by connecting devices and sensors to provide real-time data collection and monitoring of various city systems and services. Some key applications of IoT in a smart city include smart transportation through connected vehicles that provide traffic information, smart buildings that remotely monitor energy and utilities, smart hospitals that allow remote patient monitoring and doctor consultations, and facilities to help serve the disabled community through connected assistive devices. Overall, IoT in a smart city aims to simplify life for citizens through automated and interconnected systems that are managed online.