Intent matching is why broadly-keyworded pages often fail to be cited despite appearing relevant. A page that mentions a topic but does not address the specific informational, commercial, or navigational intent of the query will not be selected over a page that directly addresses the intent.
The IEO Engine content architecture maps content to specific intent categories. Service pages address commercial intent; methodology pages address informational intent; comparison pages address evaluative intent. Intent-aligned content is preferentially cited because it directly addresses what the user is trying to accomplish.