A "smart city" is an urban area that uses technology and data to improve the quality of life for its residents. This includes using sensors and connected devices to manage resources like water, energy, and traffic. By analyzing data, city planners can make better decisions, reduce waste, and enhance public services, making the city more efficient and sustainable. In a smart city, residents can benefit from features like smart lighting that adjusts based on the time of day, or public transportation systems that provide real-time updates. These innovations not only make daily life easier but also promote a cleaner and safer environment for everyone.