Artificial Intelligence

Artificial intelligence is an umbrella term for systems that take in data and produce useful outputs without being told, step by step, how to do it. It covers everything from a spam filter to a model that writes code. Most AI you use today is machine learning, and most of that is deep learning — so the three words often get used interchangeably even though they are nested, not identical.

In practice: When your email client sorts a message into Promotions without a human writing a rule for that exact message, that is AI.