Keyword research at scale & topic clusters

IntermediateDuration ~18 min video + 90 min hands-onTools A keyword tool, A spreadsheet, Search Console

Why this lesson

In Level 1 you ranked one page for one keyword. That doesn’t scale — and more importantly, it leaves most of your traffic on the table, because a topic isn’t one keyword, it’s a constellation of them. Intermediate SEO is about mapping a whole subject: finding every keyword that matters, grouping them so one page can own a cluster, and structuring the site so search engines see you as an authority on the topic, not a one-page fluke. This is the foundation of the Level 2 capstone content plan, and it’s the difference between a site that ranks for a handful of terms and one that dominates a niche.

Watch

Watch for: How to go from a seed topic to a full keyword map: expanding seeds, grouping keywords by the parent topic they belong to, and judging which cluster to build first. Watch how one 'parent topic' absorbs many long-tails that would be a mistake to split into separate thin pages.

The explainer

From keywords to a keyword map. Scale starts with breadth. Take your seed topics and expand them with a keyword tool’s ideas, matching-terms, and “questions” reports, plus Search Console’s existing query data and the “People also ask” boxes. You’ll end up with hundreds of keywords. The raw list is useless until you organize it — which is the real skill.

Group by parent topic. The key move is recognizing that many keywords are the same search in different words. “How to clean suede shoes,” “cleaning suede shoes,” “suede shoe cleaning” all want one page. The parent topic is the broadest keyword that a single page could rank for while also capturing its variants — you find it by checking whether the top-ranking pages for several keywords are the same pages. If they are, those keywords share intent and belong on one page. Grouping this way does two things: it stops you writing five thin pages that cannibalize each other (competing for the same query), and it tells you how much a single well-built page can actually earn.

Map intent per group. For each group, note the intent (from Level 1’s three C’s): is this a how-to article, a comparison, a category page, a tool? The intent decides the page type. Groups with buyer intent (“best,” “vs,” “pricing”) are your commercial priorities; informational groups build authority and feed them internal links.

Design pillar-and-cluster coverage. Now zoom out to the topic. A topic cluster is a set of related pages organized as a pillar page (a broad, authoritative overview of the whole topic) surrounded by cluster pages (focused pieces on each sub-topic), all interlinked — the hub-and-spoke shape from Level 1, now used deliberately for a subject. The pillar targets the head term; the clusters target the long-tails; internal links flow authority between them and show search engines the pages form a coherent body of work. This structure is how you earn topical authority — the compounding signal that you comprehensively cover a subject, which lifts every page in the cluster, not just the strong ones.

Prioritize, don’t boil the ocean. You can’t build everything at once. Score clusters by business value × traffic potential ÷ difficulty, and start where you can realistically win and where a ranking would actually mean revenue. A new or weak site wins by starting with lower-competition clusters and building authority outward toward the money terms — the same “go where it’s winnable” logic as Level 1, applied to a whole map.

The output of this lesson is a keyword map: a spreadsheet of grouped keywords, each group tagged with intent, page type, priority, and its place in a pillar-and-cluster plan. That map is the content plan your capstone is graded on — and the blueprint for months of work.

Do it

1. Pick a core topic for your site. Expand it into 100+ keywords using a tool’s ideas/questions reports + Search Console + “People also ask.”
2. In a spreadsheet, group keywords by parent topic — check if the top results overlap to confirm two keywords share a page.
3. Tag each group with intent and the page type it needs.
4. Identify your pillar (the head term) and its cluster sub-topics; sketch the internal links between them.
5. Flag any existing cannibalization — two of your pages already targeting the same group — to consolidate.
6. Prioritize: score groups by value × potential ÷ difficulty; pick the first 3–5 to build.
7. Save the keyword map — it’s your capstone content plan.

Level 2 workbook — keyword map template, cluster planner & the full site-audit capstonelevel-2-workbook.pdf116 KBOriginal course material — free to use

Terms introduced

Terms introduced in this lesson

• Keyword map
• Parent topic
• Topic cluster
• Pillar page
• Topical authority
• Keyword cannibalization

Each term links to the glossary, where it is defined by the way you just used it.

Check

Check yourself

1. Why group many keywords under a single "parent topic" rather than making a page per keyword?

   To make the site smallerBecause one page can rank for hundreds of related keywords — you target the topic, not each phrase, and avoid competing with yourselfBecause Google bans multiple pagesTo use fewer words

2. What is a pillar-and-cluster (hub-and-spoke) content model?

   A single giant page with everything on itA broad pillar page on a topic linked to focused cluster pages on its sub-topics, all interlinkedRandom pages with no linksA paid advertising format

3. What is topical authority?

   Ranking for one keywordA paid Google certificationComprehensive, interlinked coverage of a subject that signals to search engines you are a go-to source for itHaving the most backlinks of any site

Check answers

You can move on when you can… turn a raw keyword list into a grouped keyword map, identify the parent topic each page should target, design a pillar-and-cluster structure for a subject, and prioritize which clusters to build first.

Mark this lesson complete

Go deeper

• Ahrefs — “How to Do Keyword Research”: the full written method, including parent-topic and traffic-potential thinking.
• Next: 2.2 · On-page at scale — optimizing many pages and templates systematically, and fixing cannibalization.