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What is Domain Authority?

Domain Authority — TAP-ONE Glossary

A third-party score (not from Google) estimating how likely a website is to rank, based largely on backlinks.

Last updated: 8 August 2026

Domain Authority is a metric created by the SEO tool Moz (opens in new tab) (not an official Google metric) that scores a website from 1-100 to estimate its likelihood of ranking well, based primarily on the quantity and quality of backlinks pointing to it. Similar metrics exist under different names from other SEO tools.

Useful as a Comparison, Not a Goal in Itself

Since Domain Authority isn’t something Google actually uses, chasing the number directly is the wrong target. It’s more useful as a rough way to compare a site’s backlink profile against competitors over time, watching the trend rather than fixating on any single snapshot number.

For a local business, a handful of relevant, genuine backlinks from local directories or community organizations tends to move this number more meaningfully than a large batch of low-quality links from unrelated sites.

Free browser extensions from several SEO tool providers can show an estimated score for any site, which is a quick way to gauge roughly where a competitor stands without a paid subscription.

People also ask

Does Google use Domain Authority as a ranking factor?

No — Domain Authority is a third-party estimate created by an SEO software company, not a metric Google itself uses or publishes.

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