What is the Internet of Things (IoT)? How does IoT help in the development of smart cities and smart homes?

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The Internet of Things (IoT) is a technology where everyday physical objects like machines, home appliances, vehicles, lights, and security systems are connected to the internet, allowing them to collect and share data and work automatically without human help. In smart cities, IoT is used in traffic control systems, smart streetlights, and public safety alarms to help cities run better. In smart homes, IoT connects smart lights, smart TVs, and voice-controlled assistants, making the home more comfortable, convenient, and safe - for example, lights turning on automatically when a person enters a room.