What is a silo structure?
A silo structure is a way of organizing a website so that every page lives inside a clear theme, and the links on that page mostly stay inside the theme. Picture a grain silo: everything about one subject goes in one tall container. A creative agency site built this way might have a silo for film, a silo for branding and a silo for strategy, each with a top page that defines the subject and a set of deeper pages beneath it. Pages within the film silo link to each other freely. They link out to the branding silo rarely, and when they do, it is deliberate.
The term comes from the SEO world of the late 2000s, but the idea is older than search engines. It is how a good library or a good store is laid out: related things sit together.
Why it matters
Why a silo structure matters
Search engines work out what a page is about partly from the pages around it. A page about color grading that sits among other post-production pages, all linking to one another and up to a post-production hub, reads as part of a serious body of work on the subject. The same page dropped into a flat site, three clicks from anything related, reads as a stray. Silos concentrate topical authority, so a site becomes known for a few subjects rather than faintly associated with many.
They matter for people too. A visitor who lands deep inside a silo can see where they are, what sits above and what sits beside, and the next click is obvious.
In practice
How a silo structure works in practice
- 01
A silo begins with a decision about what the site's main subjects are, usually three to eight, chosen from the search terms the business wants to own. Each subject gets a hub page, the pages beneath it get written or regrouped, and the navigation, breadcrumbs and URL paths are arranged to mirror the hierarchy. A physical silo uses folders in the URL: /film/color-grading/. A virtual silo relies on internal links alone and leaves the URLs flat. Both work; the physical version is easier to audit.
- 02
Then the linking rules are enforced. Every page in a silo links up to its hub and across to its siblings. Links between silos are kept to the hub pages, so authority flows within the theme rather than leaking across the whole site. New content is assigned to a silo before it is written, which is the part most teams skip.
At RIOT
Silo structures at RIOT
This glossary is built on the idea. Every term sits in one of sixteen categories, from Video and Post-Production to SEO and Analytics, and the related terms at the foot of each page point mostly to neighbors in the same category. A reader who arrives on one SEO term can walk the whole subject without leaving it, which is what we want for the reader and what search engines reward.
Watch out
What people get wrong about silo structures
Treating the silo as a wall. Silos are meant to concentrate links, not to forbid them, and a site where no page may ever reference a page in another section ends up fighting its own content. The second mistake is building silos around the company's org chart instead of around what people search for. Nobody searches for a department. The third is building the folders and forgetting the links: a URL path on its own is not a silo.
