Content cluster

What a content cluster means

A content cluster is a group of related pages organised around one broad topic. A central page, often called a pillar page, covers the topic as a whole, and supporting pages go into detail on specific parts. The pages link to each other, so readers and search engines can see how the topic fits together.

Seen in practice

A heating engineer builds a cluster on boiler replacement. The main page explains the service, prices and process. Supporting pages cover combi versus system boilers, what happens on installation day, boiler finance options and how to choose a boiler size. Each links back to the main page, and the main page links to each.

Why it matters for your content

Clusters help you plan content instead of publishing random posts. They reduce the risk of pages competing with each other, make internal linking obvious and show that you cover a subject properly. For a small business, a cluster might be built around a main service.

Checking your own pages

Pick a main service and list every page on your site that relates to it. Are they linked together? Is there an obvious main page? Are any two pages trying to answer the same question? Sketching it out on paper usually shows the gaps and overlaps quickly.

Traps to avoid

• Publishing supporting pages that never link back to the main one.
• Creating clusters on topics you don't sell or know about.
• Making every supporting page a thin variation of the main page.
• Building a huge cluster before the main page is any good.

Related content terms

• Pillar page: A comprehensive hub page that clusters link to.
• Topical authority: Perceived depth and coherence of content on a subject.
• Internal linking: Links between pages on the same site that help users and distribute crawl paths.
• Keyword cannibalisation: Several pages competing for the same query and weakening each other.