Multiple definitions of AI float around, and most of them can be somewhat broad. That's because AI is a broad concept and has been around for quite some time. Here is a concise definition of AI:
Additionally, here is the definition NASA uses, which is from Section 238g of the National Defense Authorization Act of 2019.
Within these definitions, we can see that a host of fairly commonplace features on various apps and platforms can be considered AI. Features such as predictive text, shopping and streaming recommendations, and social media algorithms. AI has become an integral part of many online activities to such an extent that many of us don't fully recognize what is going on behind the user interface we are greeted by.