Schema markup / JSON-LD

Structured data. Machine-readable code sitting invisibly in your page that states outright what the content means: this is the company, this is the price, this is the author, this is the date. Without it the engine has to infer all of that from your prose, which it will sometimes get wrong. With it, you hand over a finished conceptual map, ready to cite. As AI search takes over more of the traffic, the gap between pages that do this and pages that do not will widen.