Search Engine Optimisation
Can people find my site in a list of results?
The original discipline and still the foundation. Crawlability, indexation, site speed, information architecture, internal linking, content that matches intent, and earned links. The measurable outcome is a ranking position and a click. Nothing in AI search has made this obsolete, and the evidence points the other way: classic ranking remains one of the strongest predictors of whether an AI engine cites you at all, because most engines retrieve from a search index before they generate anything.