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SEO & growth

How to build content clusters and topical authority

18 February 2026 · 7 min read · By TM Team
TL;DR

Build topical authority by creating a pillar page on a broad topic and a cluster of supporting articles on its subtopics, all interlinked. Depth across a topic outranks scattered one-offs.

Search engines increasingly reward sites that own a topic, not sites that dabble in many. The way to demonstrate that ownership is the content cluster: a central pillar page on a broad subject, surrounded by supporting articles on its subtopics, all linked together.

This structure builds topical authority — and it is exactly how a focused small site can outrank bigger, less-focused competitors.

What a content cluster is

A cluster has two parts: a pillar page that broadly covers a topic and links out to its subtopics, and cluster pages that each cover one subtopic in depth and link back to the pillar. Together they signal comprehensive coverage of the whole topic.

The cluster model
Pillar page (broad topic)
Cluster pages (subtopics)
Interlinked both ways
Topical authority

Depth across a topic, connected, signals authority.

Pillar vs cluster pages
Page typeRole
Pillar pageBroad overview, links to all subtopics
Cluster pageDeep dive on one subtopic
Internal linksConnect pillar and clusters both ways
TogetherSignal comprehensive topical coverage
Cover the whole question space
Think of every question someone might ask about your topic, and make sure a page answers each. Comprehensive coverage — the pillar plus its clusters — is what earns topical authority.

How to build a cluster

  1. 1
    Pick a pillar topic
    A broad subject central to your business that you can own.
  2. 2
    Map the subtopics
    List the specific questions and angles under it.
  3. 3
    Write the pillar page
    A strong overview that links to each subtopic.
  4. 4
    Write the cluster pages
    One in-depth page per subtopic, linking back to the pillar.
  5. 5
    Interlink deliberately
    Connect pillar and clusters so the topic reads as one body.
  • Search rewards owning a topic, not dabbling.
  • A cluster is a pillar page plus supporting subtopic pages.
  • Interlink pillar and clusters both ways.
  • Comprehensive coverage builds topical authority.
  • Focused depth lets small sites outrank big ones.
What is a content cluster?
A pillar page on a broad topic plus a set of supporting articles on its subtopics, all interlinked. Together they signal deep, authoritative coverage of the topic.
What is topical authority?
A site's demonstrated depth and comprehensiveness on a subject. Search engines favor sites that thoroughly cover a topic over those that touch it once.
How many pages does a cluster need?
Enough to cover the topic's real subtopics — often a pillar plus five to fifteen cluster pages. Coverage of the question space matters more than a fixed number.
content clusterstopical authoritypillar pagecontent strategyseo