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How to Do Keyword Research for SEO

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Key Takeaways

• Keyword research is the process of finding and analyzing the search terms your audience uses to determine which ones are worth targeting and why.
• Search intent, keyword difficulty, search volume, and topical authority are the core variables that determine whether a keyword is a viable target for your site.
• AI Overviews now appear in a significant share of searches and measurably reduce click-through rates.
• Long-tail keywords carry more weight than ever. They convey highly specific intent and mirror the natural language patterns behind voice and LLM queries.
• Prompt research is a discipline that sits alongside traditional keyword research.
• Have you been tracking your target keywords, only to watch rankings hold steady while organic traffic falls?

You’re not imagining it.

According to SEOClarity, AI Overviews (AIOs) appear for 30 percent of U.S. desktop searches, and according to Ahrefs, that presence alone reduces CTR by 58 percent.

You might think that makes keyword research less important, but that’s not true.

Your research still matters. High-volume terms alone won’t cut it anymore.

You need to identify which keywords still drive clicks and understand how LLM prompts reshape demand.

This guide covers the full research process.

What Is Keyword Research?

Keyword research is the process of identifying and analyzing search terms your audience types into search engines.

Conclusion

Keyword research has always been the foundation of SEO.

What’s changed is the complexity of the environment you’re researching. AIOs have changed how clicks are distributed. LLMs have introduced a layer of search behavior that operates under different rules entirely. And topical authority now matters as much as optimizing individual keywords.

The teams navigating this well aren’t researching keywords in isolation anymore.

They’re combining traditional keyword analysis with prompt research and monitoring AI citation alongside ranking position. They then use that research to build content strategies around topic clusters rather than individual terms.

The process I’ve outlined here covers all that. If you want to go deeper on implementation, my complete SEO checklist walks through how keyword research connects to the rest of your optimization program.

If you’d rather have an expert team handle the execution, NP Digital’s SEO consulting services are built for exactly this kind of work and dive into keyword research for your site using the process above.