APIs

"You've been using APIs your whole developer life. You just didn't know what to call them." Every time you check the weather, log into Google, or get a "Wrong password" message — something is happening behind the scenes. Data is being requested. Responses are being sent back. And somewhere in the middle, an API is doing its job. What is an API? API stands for Application Programming Interface — which sounds intimidating, but all it means is: a way for two applications to talk to each other. Think about a power socket. You don't know how electricity gets to your house — the wires, the grid, the power station. You just plug in. The socket gives you one clean, standard way to access the power without dealing with any of the complexity underneath. APIs work the same way — they hide the complexity and give you one clean point of access to data or functionality you need. How APIs Work Every API conversation has two sides — a request and a response . Your App → REQUEST → API → Server Your App