Most blogs are a pile of posts published in random order, with nothing linking them together. Each one might be fine on its own, but the site can't tell search engines "I'm an authority on this." The fix is a hub-and-spoke structure: one central page (the pillar) connected to a set of supporting posts (the cluster).
The problem with scattered content
You might have thirty posts on thirty different topics, but if none of them link to each other, search engines see them as unrelated, one-off pieces. When posts like "website speed," "Core Web Vitals" and "image optimization" link to each other, they show that your site has real depth on performance.
How the pillar-cluster model works
You write one long "pillar" page covering a broad topic (say, "Website Performance: The Complete Guide"). That page links out to more specific "cluster" posts covering its sub-topics (what INP is, image compression, caching strategies). Every cluster post links back to the pillar. The result is a map that's easy to navigate for both readers and search engines.
How to plan a cluster
- Pick a broad enough topic — not so narrow it only fills one post, not so broad it covers dozens of unrelated intents.
- List the real questions people ask about it — Search Console, client questions, and "people also ask" boxes are good sources.
- Turn each question into its own cluster post; don't cram several questions into one.
- Make the pillar page a hub that links to every cluster post and to your relevant service pages.
Photo: Clint McKoy / Unsplash
Internal linking rules
Every cluster post should link to the pillar page at least once, with meaningful anchor text. Cluster posts can link to each other too, but the pillar should always stay the center of gravity. Use anchor text that describes the destination page's topic instead of "click here" — it gives both readers and search engines the context.
How to start with content you already have
Before writing anything new, take stock of what you already have. Most sites already have five or ten posts that could sit under one shared heading. In that case, writing a pillar page and linking your existing posts to it gets you there far faster than starting from a blank page.
In short
Instead of publishing posts at random, structure your topics as hubs and spokes. We build this into our content strategy work — if you want to see whether your existing content could become a cluster, get in touch.