A pillar page plus its supporting articles is called a topic cluster. The internal linking is the part that does the work, and the part most people skip.
A pillar page is a long page that covers a broad topic end to end and links out to narrower pages on each subtopic. Those narrower pages link back to it. The whole group is a topic cluster, and the point is to show a search engine you cover a subject properly instead of in scattered fragments.
Picking the right topic
The topic has to be broad enough to support eight or ten supporting articles, and narrow enough that a single page can introduce it without turning into a book. “SEO” is too broad. “Local SEO for dental practices” works. If you cannot list at least six genuine subtopics off the top of your head, the topic is too small and you just want one good article.
How the cluster fits together
The pillar page answers the main question and gives each subtopic two or three paragraphs, enough to be useful on its own. Each subtopic then gets its own page that goes properly deep, and that page links back to the pillar. The pillar links down to every child.
That two-way linking is the part people skip, and it is the part that does the work. Without it you have a long page and some unrelated articles. With it, the pillar accumulates internal link equity from the whole cluster, and Google gets a clear signal about which page is the authority on the broad term.
What a good one looks like
Usually 2,000 to 4,000 words, with a table of contents and jump links because nobody reads that linearly. Sections named for what they contain. A clear definition in the opening paragraph, because plenty of people arrive wanting only that. Real examples, numbers and screenshots rather than generalities. And a sensible next step, since a pillar page that ranks and converts nothing is an expensive hobby.
Build the pillar first if the topic is new to your site, or last if you already have the supporting articles and need something to tie them together. Either order works. We plan clusters this way across most client sites, and you can see how we approach it on our expertise page.
Where pillar pages go wrong
The common failure is padding. A page stretched to 3,000 words with filler ranks worse than a tight 1,200 word page that answers the question. The second failure is cannibalisation: the pillar and one of its children both chase the same keyword, and Google picks whichever it likes on a given day. Give every page in the cluster its own primary term and check in Search Console that they are not swapping positions.
Common questions
How long should a pillar page be?
Long enough to cover the subtopics and no longer. Most land between 2,000 and 4,000 words. Word count is an output of covering the topic, not a target to hit. If you are padding to reach a number, cut instead.
How many supporting pages does a cluster need?
Six is a workable minimum, ten to fifteen is a healthy cluster. Fewer than six and the pillar has little to link to. Build them over a few months rather than publishing everything at once.
Should a pillar page be a blog post or a landing page?
Either, as long as the URL is stable and sits somewhere sensible in the structure. Informational pillars usually live in the blog or a resources section. Commercial pillars work better as a service page with the depth added to it.
Do pillar pages still work?
Yes, though the mechanism matters more than the format. What helps is genuine topical coverage and clean internal linking. A pillar page is a tidy way to get both, not a trick in itself.
See our glossary entry for pillar page for the short definition.
