A technique for handling sequential asynchronous operations by linking promises together using then() methods, creating a flat, readable chain instead of nested callbacks. Each promise in the chain passes its result to the next operation.
Combines 'promise' referring to a placeholder for a future value (from the concept of promising to deliver something) with 'chaining' meaning linking together. This pattern emerged as a solution to callback hell in JavaScript and similar languages.
Promise chaining is like an assembly line where each worker finishes their task and hands the result to the next person in line - no one has to wait around or guess when the previous step is done! This turns the nightmare of nested callbacks into a clean, readable sequence.
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