The degree to which a site is recognised as a comprehensive, trusted source on a particular subject.
ID
SS-DF-076
Confidence
High · 86
Evidence
Strong
Updated
2026-07-08
Definition
The degree to which a site is recognised as a comprehensive, trusted source on a particular subject.
Topical authority is earned by covering a subject thoroughly and credibly across many interlinked pages, demonstrating depth, breadth, and consistency rather than isolated one-off posts. Search engines use it to decide which sites to trust for a theme, and AI systems favour authoritative sources when selecting what to cite. It is built through structured topic clusters, genuine expertise, information gain, and supporting signals such as author credentials and external citations.