Glossary

Internal Links

Internal links are links that connect pages on the same website. They carry visitors onward to relevant content and show search engines how a site's pages relate and which matter most. Internal link building is among the most underrated disciplines in SEO, because it is one of the few factors a company controls entirely.

An internal link does three jobs at once. It creates crawl paths, since search engines find new pages by following links, and a page with no internal links at all risks never being found. It distributes authority, because strength from the strongest pages flows onward through links, so a link from the homepage or a well-visited guide can lift a subpage noticeably. And it supplies context, since the anchor text tells the search engine what the receiving page is about.

Structure over volume

What separates good internal linking from bad is rarely the number of links; it is the structure. A central guide links to the subpages that open the subject up, and those subpages link back and across. Topic clusters make clear where a site's authority sits, and the same structure helps AI search engines, which follow links the same way when choosing sources for an answer. Business-critical pages with strikingly few internal links are a common finding in technical audits, and the guide to internal link building has the full picture.