Search intent
Search intent is what the person typing a query is actually trying to do: learn something, find a specific site, compare options, or buy. Pages rank and convert when they match the intent, not just the words.
The same topic carries different intents. “What is SEO” wants a definition; “SEO services cost” wants numbers; “SEO agency near me” wants a shortlist. A page built for one intent rarely wins the others, no matter how well written.
Intent explains most “why don't we rank” mysteries: the page targets a commercial query with informational content, or vice versa. It also explains conversion gaps: ranking for a query whose intent you don't satisfy earns visits that bounce.
Practically, intent mapping is the first content exercise in our SEO work: every target query gets read against what currently ranks for it, and every page gets exactly one intent to own. It is the same discipline that prevents keyword cannibalization.