Domain Authority
A third party score (Moz, Ahrefs, Semrush) that estimates how well a domain may rank.
Key takeaways
- Domain Authority is a third party score (Moz, Ahrefs, Semrush) that estimates how well a domain may rank.
- Use the score to compare your site with competitors in the same tool, not as an absolute measure.
- Avoid: reporting Domain Authority as if it were a Google metric.
What is Domain Authority?
Domain Authority is not a Google metric. It is useful as a relative benchmark when comparing competitors but should never be optimised for in isolation.
Domain Authority is a third-party score; Moz explains how it's calculated and what it can and can't tell you.
Why Domain Authority matters for SEO in 2026
Third-party authority scores are a quick way to compare competitors, but Google doesn't use them. Treating them as a goal leads teams to chase numbers rather than the links, content and reputation that actually move rankings.
For a wider view of where this fits, see our full SEO glossary or explore the SEO and GEO service we run for clients.
How to apply Domain Authority on your site
Knowing the concept is only half of it. Work through these steps in order to put Domain Authority into practice on your own pages:
- Use the score to compare your site with competitors in the same tool, not as an absolute measure.
- Track trends over months rather than reacting to small changes.
- Pair it with real outcomes such as rankings, traffic and enquiries.
Common mistakes to avoid
Most sites that struggle with Domain Authority fall into the same traps. Check your pages against each of these before moving on:
- Reporting Domain Authority as if it were a Google metric.
- Comparing scores across different tools, which calculate them differently.
- Buying links purely to raise the score.
Questions about Domain Authority
A third party score (Moz, Ahrefs, Semrush) that estimates how well a domain may rank.
Third-party authority scores are a quick way to compare competitors, but Google doesn't use them. Treating them as a goal leads teams to chase numbers rather than the links, content and reputation that actually move rankings.
Start here: use the score to compare your site with competitors in the same tool, not as an absolute measure. Then track trends over months rather than reacting to small changes.
The most common is reporting Domain Authority as if it were a Google metric. Another is comparing scores across different tools, which calculate them differently.