A page can rank for years and then slide without anything on it changing. Often, the searchers changed.
Spotting intent drift
Compare your page with today's top results. If they have become comparisons, tools or fresher answers, your page is answering yesterday's question.
Updating for today
Refresh structure and examples to match current intent, and keep the URL so the page keeps its history.
Takeaways
Review your top pages against the current results every quarter and update them before the slide starts.
