05/29/2026
Domain Authority is a made-up metric from a third-party tool. Topical Authority is what Google actually uses. Stop confusing them.
DA (Moz), DR (Ahrefs), AS (Semrush) — these are useful proxies for comparing site strength. But Google doesn't use any of them. They're proprietary algorithms built to approximate Google's concept of authority.
What Google actually evaluates more closely:
→ How comprehensively does this site cover its core topic area?
→ Do other authoritative sites in this niche link to it?
→ Does it have consistent, high-quality content on a focused set of topics?
→ Are the authors/brand recognized entities in the industry?
This is why a DA 30 niche site can outrank a DA 80 general publication on a specific topic. The niche site has deeper topical authority in that subject area.
Practical implication: a site with DA 25 that completely dominates one niche will often outrank a DA 60 generalist site that covers everything shallowly.
Build deep before you build wide. Own a topic before expanding to adjacent ones.
This reframe has changed how I approach every new SEO project. What domain of topical authority is your site truly building?