What Google says
We read Google's pages on 9 October 2026. The words content cluster do not appear on the pages we read, so the idea is an industry habit. What Google does say supports parts of it:
- Links help Google find pages. Google says internal links help people and Google make sense of your site, and help Google find other pages on it.
- Every page you care about needs a link in. Google says each such page should have a link from at least one other page on your site.
- Link in context. Google suggests linking to related pages inside the text where they help the reader.
- No magic number. Google says there is no ideal number of links per page.
- Group similar pages. The starter guide suggests grouping topically similar pages in folders, and says this can help Google learn how often the pages in each folder change.
Google does not say that a cluster raises rankings. So we call a cluster a way of organising pages for readers. If Google finds it easier to follow, that is a bonus we cannot promise.
How a cluster is built
- Choose one subject your business knows well and your customers ask about.
- Write a main page that gives the whole picture. See pillar page.
- Write smaller pages for the separate questions inside the subject.
- Link them both ways. The main page links to each small page. Each small page links back, and to its neighbours when that helps the reader.
- Use clear link words that say what the reader will find. Google asks for anchor text that is descriptive and concise.
A made-up example
A tile maker in Morbi wants to help builders and home owners choose floor tiles. The maker plans this cluster.
- Main page: How to choose floor tiles for your home.
- Smaller pages: tile sizes for small rooms, glazed and unglazed tiles, tiles for balcony floors, how much extra to order, and how to clean each type.
- Links: the main page links to all five. Each smaller page links back to the main page.
A builder who lands on the page about extra quantity can reach the full guide in one click. A reader of the full guide can open the page on cleaning. Nobody reaches a dead end.
Common mistakes
- Creating pages only to fill a plan, with nothing new on them.
- Leaving a small page with no link from the others.
- Using click here or read more as link words.
- Building a cluster on a subject your business does not really know.
- Writing the same answer on three pages, so they compete with each other.
- Expecting a quick rise in rankings. Google's starter guide says some changes take several months.
Related terms
- Pillar page: the main page of a cluster.
- Topical authority: an SEO (search engine optimisation) idea about covering a subject well.
- Internal linking: links between pages of the same site.
- Anchor text: the clickable words of a link.
- Keyword research: finding the words your buyers search for.
To plan the pages and links for your own subject, see our SEO work, or begin with an SEO audit.
Sources
- Google Search Central, "Link best practices for Google" (developers.google.com/search/docs/crawling-indexing/links-crawlable), last updated 10 December 2025, read 9 October 2026.
- Google Search Central, SEO Starter Guide (developers.google.com/search/docs/fundamentals/seo-starter-guide), read 9 October 2026.
