What is a silo structure?

A silo structure is a way of organizing the pages of a website into thematic groups (silos), where the pages within a group mainly link to each other. This creates a clear hierarchy from a main page down to subpages, which shows the relationship between topics to visitors and search engines.

Why is a silo structure important?

Clear themes: search engines can see which pages belong to a topic.
Focused internal links: visitors find related pages easily and the coherence within the topic gets stronger.
Order: new content immediately has a logical place.

Examples of a silo structure

A plumber with silos for “leaks”, “boilers” and “bathrooms”, each with a main page and subpages
An online store with category, subcategory and product
A blog with a main article on “solar panels” and subarticles on payback time and subsidies

How do you build a silo structure?

Create one main page per core topic, link subpages to it with internal links and link back to the main page. Linking to other silos is fine when it makes sense for visitors: Google does not require strict silos. See on-page SEO.

Silo structure