How Can a Single Button Control an Entire Smart Home?

Imagine your house is like a big toy set, and every toy has its own switch. Now imagine you have one magical button that turns on all the toys at once, that's what happens when you press the single button in a smart home. It sends messages to all the lights, speakers, and thermostats, telling them what to do. They get the message because they're connected through the internet, like friends talking to each other.