Internal linking

Internal linking is the set of links that connect a site's pages to one another. Done well, it helps visitors navigate, distributes authority across your pages, and gives search engines and generative engines alike a map of how your content relates.

Why internal linking matters for both SEO and GEO

In traditional SEO, internal linking has always served two purposes: making pages easier to crawl (bots discover pages by following links) and passing on some authority from one page to another through the links pointing to it. A page that's well linked from other pages on the site typically gets indexed faster and ranks better.

For GEO, the logic is similar but the stakes differ. Language models and the systems that power them (through direct crawling or real-time content retrieval) also rely on a site's structure to understand how topics connect. Clear internal linking signals that a pillar page is authoritative on a topic and that the pages linked from it are its sub-topics. This helps generative AIs place a piece of content in its thematic context rather than reading it as an isolated page.

Best practices for anchor text

The anchor is the clickable text of a link. It's the most overlooked part of internal linking, even though it carries a large share of the information about the destination page.

• Use descriptive anchors close to the actual topic of the destination page, rather than generic phrases ("click here", "learn more").
• Vary the wording from one page to another instead of systematically repeating the exact match of your main keyword: it stays more natural and avoids overly mechanical optimization.
• Place the link inside a sentence that still makes sense without it, so the surrounding context confirms the destination page's topic.
• Avoid misleading anchors: a link should lead exactly where its text suggests.

Click depth: an often underrated factor

Click depth measures how many clicks it takes to reach a page from the homepage. A page three or four clicks away from the homepage is harder to discover, for visitors and crawlers alike, than one reachable in one or two clicks.

There's no universal rule for the maximum acceptable depth — it depends on site size — but the goal stays the same: bring important pages closer to the site's root, notably through the main menu, pillar pages, or a summary page. A site organized around a hub & spoke architecture naturally supports this, since every spoke page links directly back to its pillar page.

How internal linking distributes authority across pages

Every inbound link to a page can be seen as a vote of confidence. A page that receives links from many well-linked pages on the site accumulates more internal authority than an isolated page. That's why pillar pages usually receive the most internal inbound links: they act as hubs that redistribute this authority to the spoke pages they reference.

This distribution isn't fixed. Adding a link from a high-traffic or high-authority page to a newer or less visible one is one of the fastest ways to give the latter a boost, without waiting for new external links.

Internal linking and thematic understanding by AI

Beyond distributing authority, internal linking also clarifies topics. When several pages covering related subjects link to each other with consistent anchors, they form a set that engines can recognize as a coherent whole — which ties back to the idea of GEO-ready content: content that's easy to place in context is more likely to be picked up correctly in a generated answer.

Conversely, a site where pages exist without any logical link between them — each optimized in isolation — makes this reading harder. The risk isn't just weaker visibility, but also poorly contextualized content if it does get cited: an AI that doesn't perceive the connection between your product page and its related buying guide risks presenting one without the other, or citing a competitor who made that link more explicit.

A simple method to audit your internal linking

You don't need sophisticated tools to get started:

1. List your most important pages (pillar pages, strategic product pages, conversion pages).
2. For each one, check how many internal pages link to it and with which anchors.
3. Identify orphan pages — those receiving no internal links — and add links to them from thematically related pages.
4. Spot generic or repetitive anchors and rewrite them so they actually describe the destination page.
5. Check that your pillar pages link out to all their spoke pages, and vice versa.

This audit is worth repeating regularly, especially after publishing new content: that's when adding a few well-chosen internal links has the most impact, both for visitors and for how well search and AI engines can read your site.