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Topic clusters explained: plan a month of articles in an hour
A topic cluster is one main page and a set of related articles that link together. How to choose a topic, plan the articles and link them so they rank as a group.
· 4 min read
A topic cluster is a group of pages about one subject: a main page that covers the subject broadly, and several articles that each answer one specific question within it, all linked to each other. Search engines read the group as evidence that you know the subject. For you, it turns "what should we write next?" into a list.
You can plan one in an hour.
Why clusters beat single articles
A lone article on a broad topic has to compete with every site that ever wrote about it. A cluster wins differently:
- Each article targets a narrow question that is easier to rank for.
- Links between them pass relevance. The specific pages support the main one.
- Readers stay. Someone who finishes one article has an obvious next one.
- You become known for the subject, not just one keyword.
The parts
The pillar page. A broad overview of the subject: what it is, why it matters, the main parts. It links to every article in the cluster.
The cluster articles. Each covers one sub-topic in depth and links back to the pillar and to its closest siblings.
The links. Without them it is just a category. The links are what make it a cluster.
Plan one in an hour
Minutes 0 to 10: choose the subject
Pick a subject that is:
- Close to what you sell or do. A reader of the cluster should be a possible customer.
- Broad enough for at least five articles.
- Narrow enough that you can cover it properly. "Marketing" is too broad. "Email onboarding for software products" is right.
Minutes 10 to 30: list the questions
Write every question a customer has about the subject. Sources:
- Questions from sales calls and support tickets.
- The "people also ask" boxes and related searches for your subject.
- Questions in communities where your customers talk.
- What you wish customers knew before they called you.
Aim for twenty. Do not judge them yet.
Minutes 30 to 45: group and choose
Group similar questions. Each group is one article. Then pick five to eight, favouring:
- questions you can answer better than what already ranks,
- questions with clear intent behind them, and
- a mix of beginner and specific.
Give each a working title and the one search phrase it should answer.
Minutes 45 to 60: map the links
Draw it:
| Article | Links to pillar | Links to siblings |
|---|---|---|
| What is email onboarding? | Yes | Welcome email examples |
| Welcome email examples | Yes | Subject lines, timing |
| How long should onboarding last? | Yes | Timing, metrics |
| Onboarding email metrics | Yes | How long, examples |
| Common onboarding mistakes | Yes | Examples, metrics |
Now you have a month of articles and a reason for each.
Write the cluster
- Start with two or three articles, not the pillar. You will write a better overview once you have written the parts.
- One question per article. Answer it in the first paragraph, then go deeper.
- Link as you write. Add the link to the pillar and to siblings in each draft, using descriptive words, not "click here".
- Publish the pillar when three or four articles exist, and update it as more arrive.
For the writing itself, see how to write a blog post people finish and the on-page SEO checklist.
One page per intent
The most common cluster mistake is two articles answering the same question. They compete with each other and both do worse. Before writing, check each planned article against the rest: does it answer a question no other page does? If two overlap, merge them.
Keep it alive
A cluster is not finished when it is published.
- Add an article when a new question keeps coming up.
- Refresh articles as facts change. Old content slides quietly. See content decay and refresh.
- Check the links every few months. New articles should be linked from old ones, not only the other way round.
Clusters and AI search
Clusters suit AI answer engines too. Each article answers one clear question, which is the unit those engines quote. A site that covers a subject thoroughly and consistently gives them more to draw on. More in GEO vs SEO.
Let an agent do the planning
The hour above is a good hour to delegate.
In FinalPost AI, each run of the SEO agent delivers a target keyword and intent, a five-article topic cluster, a content brief, an on-page checklist and an internal-linking plan. It arrives as a report for you to read and adjust.
The Content agent then writes the articles: a title, a meta description, an outline, a 1,200 to 1,800 word body, tags and internal-link suggestions. Each lands as a draft for your approval and goes to your blog when you approve it.
The plan is a starting point. You know which questions your customers really ask, so edit the cluster before anything is written.
Frequently asked questions
How many articles should a topic cluster have?
Five to eight is a good first cluster. Add more as real questions appear. Quality and coverage matter more than the count.
Is a pillar page the same as a category page?
No. A category page lists articles. A pillar page is itself a useful overview that explains the subject and links out to the detail.
How long before a cluster ranks?
It varies widely with competition and your site's history. Expect months, not weeks, and judge the cluster as a whole.