Keyword Research: How to Find the Right Search Terms

Keyword research in one sentence

Keyword research is the process by which you find out which terms your audience enters into Google & co. – and how valuable each of them is for your business. It is the foundation of every content strategy: without it, you write past your customers’ needs.

It has long been about more than just collecting search terms. What is decisive is understanding the intent behind the search and placing keywords along the entire customer journey – from the first question to the buying decision. Whoever knows what people are searching for can deliver the right answer at exactly the right moment.

The research process in four steps

Good research always follows the same basic framework. Four steps are enough to get from a vague idea to a prioritized keyword list.

1. Collect seed keywords: Start with the basic terms that describe your business – products, services, your audience’s problems. Plus the terms you are already found for today (see Search Console). For an online bookstore that might be “buy books online”, “crime novels”, or “nonfiction”.
2. Expand: You feed the seed keywords into tools like the Google Keyword Planner, Sistrix, Ahrefs, or Google Suggest. They deliver related terms, questions, and niche variants you would never have thought of yourself.
3. Evaluate: Now you filter by search volume, competition, and – most importantly – relevance to your business. A keyword without a business connection brings traffic but no customers.
4. Cluster: Terms with the same search intent belong on one page, not on ten. One cluster = one URL. How to do this systematically you can read under Keyword clustering.

This process is not a one-off project. Search behavior, trends, and competition change constantly – schedule fixed dates to refresh your research.

The most important metrics

Keyword tools throw dozens of metrics at you. Four of them carry most decisions – and each has a typical trap.

It is additionally worth looking at two “soft” factors: the business potential (Can you meaningfully place your offer in the context of the keyword?) and the growth (Is interest rising or falling? Google Trends reveals it). A quick win with low difficulty and a clear business connection almost always beats the prestigious head keyword you fight over for two years.

Long-tail: the underrated revenue drivers

A keyword like “shoes” has enormous volume – but unclear intent and brutal competition. “waterproof women’s hiking boots review” has far less search volume, but a crystal-clear intent and clearly better ranking chances.

These longer, specific search phrases are called long-tail keywords. Individually they bring little traffic. In total, however, the mass of many long-tail terms beats the one big head keyword in most projects – for traffic and even more so for conversions. They also fit perfectly with how people phrase things in voice search and AI chats: in whole questions instead of keywords.

Search intent: the most important filter

For every promising keyword you should check the search intent – fastest via a Google search and a look at the results.

• Informational: The user wants to learn (“how does a coffee machine work”) – guides and how-tos rank.
• Navigational: The user is looking for a specific page or brand (“ahrefs blog”).
• Commercial: The user compares before buying (“best coffee machine review”) – comparisons and test reports rank.
• Transactional: The user wants to act (“buy espresso machine”) – product pages and shops rank.

The intent decides the content format. A product page does not rank for an informational keyword, no matter how well optimized it is. More on this under Understanding search intent.

Competitors and Search Console as a source of ideas

Two sources often deliver the most valuable keywords for free:

• Competitor analysis: With tools like the Ahrefs Site Explorer or Semrush you can see which terms the competition ranks for. Especially productive is the content gap analysis: keywords that several competitors rank for but your page does not. Those are concrete, documented gaps.
• Your own rankings: The free Google Search Console shows in the performance report which search queries you are already found for – often for terms you never thought of. These quick wins on page 2 can frequently be lifted to page 1 with targeted optimization.

From keywords to content

The finished research is not an end in itself – it steers all your content work:

• Content strategy: The topic clusters form the framework of your editorial plan. They show which content should be newly created and which you should update. How to turn this into ranking content you can read under Content that ranks.
• Keyword mapping: Every important page is assigned a clear keyword target – this way you avoid internal competition. Details under Keyword mapping.
• On-page: The main keyword naturally belongs in the title, H1, URL, and first paragraph; supporting terms in subheadings and body text.

Keyword research in the age of AI search

With AI Overviews right inside Google and assistants like ChatGPT or Perplexity, research is shifting. Two points become more important:

First, for purely informational keywords the click rate often drops, because the AI already summarizes the answer in the results list. All the more important is the click-potential metric – and content that goes beyond the mere short answer. Second, people phrase things in AI chats in whole sentences and follow-up questions. Long-tail terms and real user questions (from “People Also Ask”, forums, support requests) gain weight. The good news: whoever researches cleanly by search intent is prepared for both worlds.

Conclusion

Keyword research is the art of understanding the language of your audience – and the science of prioritizing it with data. The four steps of collecting, expanding, evaluating, and clustering give you the framework; metrics, search intent, and competitor data fill it. Treat research as an ongoing process, not a one-time task, and it will deliver, for years, the foundation for content that gets found and sells.