Short definition
Keyword research is the process of discovering the search terms a target audience uses, scoring their volume and competition, and choosing which to target.
In depth
Modern keyword research is intent-led, not just volume-led. Group queries by buyer intent (informational, navigational, commercial, transactional) and prioritize high-intent terms first. Tools like Ahrefs, Semrush, Google Search Console, and the AI engines themselves surface long-tail and conversational variants that increasingly drive AI-citation traffic. For service businesses, location-modified commercial queries ('roofing contractor [city]') are the highest-ROI cluster.
Example
A landscaping firm finds 12 underserved long-tail queries via Search Console, builds a page for each, and triples organic leads in two quarters.