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Glossary · Search engine optimization

Domain Authority

Search engine optimization · Glossary

What is Domain Authority?

Domain authority is a third-party score (1–100) estimating how likely a site is to rank, based largely on its backlink profile. Higher generally means stronger.

Trusted sitelinks to youYour siteauthority ↑1 link = 1 voteQuality, relevant backlinks tell Google your site is trustworthy.
How a backlink passes authority
AI quick answer

Domain Authority is a third-party score from Moz, on a 1-to-100 scale, that estimates how likely a website is to rank in search results, based largely on its backlink profile. It is a comparative benchmarking tool, not an official Google ranking factor, so higher generally signals stronger authority but does not directly cause rankings.

Example: a Winter Garden roofing company

A roofer in Winter Garden has a Domain Authority of 12, while two competitors ranking on page one for “roof replacement near me” sit around 35. Rather than chasing the number, the company earns a handful of quality backlinks , a feature in a local Orlando news outlet, a Central Florida home-builders association listing, and a sponsorship page from a Windermere little-league team. Over the next several months its DA climbs into the low 20s, and its map-pack and organic visibility for service-area searches improves right alongside it. The score moved because the underlying signal , trusted sites vouching for them , actually moved.

Why it matters: Domain Authority (DA) is a Moz metric, not a Google ranking factor. Google has said repeatedly that it does not use any single “domain authority” score. DA is useful as a rough, comparative gauge , it lets you size up a competitor or a potential link source on a 1-to-100 logarithmic scale , but it cannot move your rankings on its own. Treat it like a credit score: a symptom of healthy fundamentals, not the thing you optimize directly.

How it is measured, and where people go wrong: Moz calculates DA from your backlink profile , the number of linking domains, the quality of those links, and predicted ranking strength. Competing tools publish their own versions, so the numbers will not match: Ahrefs has Domain Rating (DR) and Semrush has Authority Score. The most common mistake is treating DA as the goal itself , buying links, chasing volume over relevance, or panicking over small dips when Moz refreshes its index. Because the scale is logarithmic, climbing from 20 to 30 is far easier than 60 to 70, and a brand-new local site starting near 1 is completely normal.

How it connects to local SEO and answer-engine optimization: for a Central Florida small business, a few authoritative, locally relevant links (a Chamber of Commerce page, a regional news mention, a reputable supplier directory) do more for real visibility than dozens of low-quality ones. Those same trusted citations help AI assistants treat your site as a credible source worth quoting, so the link-earning work that nudges your DA upward also makes you easier to cite in AI answers , the same fundamentals pay off in both places.

Frequently asked

Is Domain Authority a Google ranking factor?
No. Domain Authority is a third-party score created by Moz, not something Google uses. Google has confirmed it does not rely on any single “domain authority” metric. DA is a useful comparative estimate of ranking strength, but it does not directly influence where you rank.
What is a good Domain Authority score?
It depends on your competition, not an absolute target. The 1-to-100 scale is logarithmic, so new sites near 1-to-20 are normal and most local businesses compete fine in the 20s and 30s. Compare your DA to the sites already ranking for your terms rather than chasing a round number.
How do I increase my Domain Authority?
Earn quality, relevant backlinks over time. Get listed in trusted local directories and associations, earn mentions from regional news and reputable suppliers, and publish content others want to link to. Avoid buying links or chasing volume , relevance and trust move the score, spam can hurt it.
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