--- title: Topic Cluster — definition and structure for services | Siite description: "Topic clusters explained: how a hub page and its supporting articles build authority on one service, and how internal links hold the structure together." url: "https://siite.co/dictionary/topic-cluster" type: static generatedAt: "2026-10-22T08:21:10.854Z" --- SEO # Topic Cluster A group of related pages built around one central page — a hub covering the main topic, with supporting pages answering narrower questions and linking back. Also goes by Hub and spoke, Content cluster [![Siite](/images/layout/logo.svg)Written by Siite](/about/)Updated September 8, 2026 ## Entry contents [All Terms A to Z←Browse the full dictionary](/dictionary/) A topic cluster is a hub page plus the supporting pages around it. The hub targets the main commercial search. Around it sit the pages that take one question each, all of them pointing back. It is a way of covering a subject properly instead of publishing pages one at a time and hoping they add up. > **Briefly explained** > > - One hub page, several supporting pages, all linked. > - The hub sells. The supporting pages answer. > - It builds depth on a subject rather than breadth across many. > - One finished cluster beats three abandoned ones. ## Why does depth matter? Because search engines assess a site’s standing on a subject, not only individual pages. A site with one thin page about a service competes badly against a site that also answers what it costs, how long it takes, how to tell whether you need it, and what happens while the work is going on. The second site looks like it does this for a living. ## Why does it match how people buy? Almost nobody starts ready to spend. They arrive with a question, often a worried one. The cluster is what carries them from that question to the page that asks for the job, without making them search again and land on a competitor. ## How do you build one? 1. Pick a service worth the effort: high value or high volume. 1. Write the hub as a real service page, not a summary of the other pages. 1. List the questions customers ask before buying, in their words, from your own phone calls. 1. Give each question its own page, and link it to the hub with descriptive wording. 1. Link the hub back out to the supporting pages worth sending readers to. Then stop and finish it before starting another. ## How do you keep it from cannibalizing itself? Give every page one job, written in one sentence. If two sentences match, you have built the problem described in [keyword cannibalization](/dictionary/keyword-cannibalization/) rather than a cluster. ## What do the terms mean? - **Hub:** The central page targeting the main search. - **Spoke:** A supporting page answering one narrower question. - **Anchor text:** The wording of the link between them, which tells search engines what each page is about. - **Topical authority:** The informal name for a site being treated as a credible source on a subject. Owner questions ## What owners ask us about Topic Cluster ### How many pages make a cluster? +Enough to cover the questions a buyer actually asks, often five to ten around one service. The count matters less than whether each page answers something distinct. ### What goes on the hub page? +The commercial page for the service: what you do, where, what it costs, why you. The supporting pages handle the questions and link back to it. ### Does clustering risk cannibalization? +Only if the supporting pages duplicate the hub's intent. Keep each one on a genuinely different question and the structure strengthens rather than splits. ### How long does a cluster take to work? +Months, and it builds rather than switches on. The hub usually moves first, because the supporting pages are feeding it links and relevance. ### Should I build several at once? +No. One finished cluster on your best service is worth more than three half-built ones, and half-built is where most of them stop.Put this to work ## Guides that use this Step-by-step playbooks from the team, written for owners doing the work themselves. No sign-up and no email required. [### Re-piping content cluster: rank for the highest-ticket plumbing search Whole-home re-piping is a $4-15k job with low search competition in Austin. Most operators have one thin page. Here's the cluster that captures it. Read the guide→](/articles/plumbing-repiping-content-cluster/)[### Commercial HVAC SEO in Austin: rank for property-manager searches Austin's highest-ticket HVAC contracts come from commercial property managers, and almost nobody ranks for the terms they search. Here's the playbook. Read the guide→](/articles/commercial-hvac-seo-property-managers-austin/)4.9191 reviewsWhere this turns into work ## Depth on the service that pays A real service page at the center, the questions your customers actually ask around it, and the internal links that turn a pile of pages into a structure. [See the service→](/services/local-seo/)[Ask us about it](/contact/) ![Nicklas Dyrmose, SEO Specialist at Siite](/images/team/panel/nicklas-dyrmose.webp) *Our SEO specialist* ## Related entries - [### Internal Links Links from one page of your site to another — how search engines discover pages, how importance is distributed, and how visitors move from reading to booking.](/dictionary/internal-links/) - [### Keyword Cannibalization Two or more of your own pages competing for the same search, splitting signals between them so neither ranks as well as one strong page would.](/dictionary/keyword-cannibalization/) - [### Search Intent What the person actually wants when they type a query — to learn, to compare, to find a specific site, or to hire someone right now.](/dictionary/search-intent/) - [### Organic Traffic Visits that arrive from unpaid search results — the traffic you earned through rankings rather than bought with ad spend.](/dictionary/organic-traffic/) [All terms A to Z Browse every term A to Z Open the dictionary→](/dictionary/)