What Exactly Is Domain Authority?
Domain Authority is a predictive metric developed by Moz back in 2010. It scores your entire website on a scale of 1 to 100 — the higher that number, the more likely your pages are to rank well on Google. Think of it as a trust score for your domain: the internet's version of a credit rating.
The score is built using a machine learning model that weighs the number of linking root domains, the quality of those links, and a handful of other link-based signals. It's logarithmic — going from DA 20 to DA 30 is achievable with steady effort, but climbing from DA 70 to DA 80 is a serious accomplishment. The good news: you don't need a DA of 90 to rank well. You just need a higher DA than your competitors.
Important heads-up: Domain Authority is NOT an official Google metric. Google doesn't use DA in its algorithm. It's a third-party proxy — but a genuinely useful one — for benchmarking your site's authority against the competition in your niche.
DA vs. DR — What's the Difference?
Two similar-sounding metrics get thrown around constantly in the SEO world. Here's the quick breakdown:
- Domain Authority (DA) — created by Moz. Measures your overall link profile using their Link Explorer data.
- Domain Rating (DR) — created by Ahrefs. Scores the strength of your backlink profile relative to all other sites in their index.
Both measure essentially the same thing from slightly different angles. Most SEO professionals track both. When clients ask "what's my DA?", smart agencies check both scores to get the full picture of where a site actually stands.
What's a Good Domain Authority Score?
DA is a competitive metric — it only means something in context. A DA of 40 might be outstanding in a niche local market but average in a competitive national space. Here are the general benchmarks:
7 Proven Ways to Improve Your Domain Authority
Honest truth: there's no quick hack for building DA. It's a long-term reputation game. But these seven strategies — done consistently — genuinely move the needle.
- Earn High-Quality BacklinksThis is the single biggest DA driver. One backlink from a DA 70+ site is worth more than 50 links from DA 10 blogs. Focus on getting featured in industry publications, news outlets, and authoritative directories. Guest posting on respected blogs in your niche is still one of the most effective approaches when the content genuinely adds value.
- Create Link-Worthy ContentThe best link-building strategy is publishing content people actually want to share. Original research, comprehensive guides, unique data studies, free tools — these naturally attract backlinks without you having to beg for them. If your content is genuinely the best answer on the internet for a topic, links will come to you.
- Remove Toxic & Spammy LinksBad backlinks drag your DA down. Use Moz's Link Explorer, Google Search Console, or Ahrefs to audit your link profile regularly. Disavow links from spammy or penalized sites using Google's Disavow Tool. Think of it like cleaning up a credit report — removing the bad stuff matters just as much as earning the good.
- Fix Your Technical SEOBroken links, crawl errors, missing sitemaps, and slow page speed all signal to search engines that your site isn't well-maintained. A technically clean site is more crawlable, which helps your existing authority flow more effectively across pages. Run a full audit with Screaming Frog or Semrush Site Audit regularly.
- Strengthen Your Internal LinksInternal links pass authority between your own pages. A well-structured internal linking network ensures link equity from your high-DA pages flows to the pages you want to rank. Don't let your best content sit as an island — connect it intentionally to supporting articles throughout your site.
- Diversify Your Link ProfileLinks from a wide variety of authoritative domains are more powerful than many links from a few sources. Aim for backlinks from news outlets, .edu and .gov domains, industry associations, podcasts, and video descriptions. Diversity signals organic, natural growth — and Google's algorithms reward exactly that.
- Be Consistent and PatientDA doesn't change overnight — Moz updates it roughly once a month. The sites that win are the ones showing up consistently: publishing quality content, building genuine link relationships, and keeping their technical foundation clean month after month. Treat it like a savings account, not a lottery ticket.
Domain Authority and AI Search Visibility
Here's something most SEO guides won't tell you: DA matters more than ever in the age of AI search. Tools like ChatGPT, Perplexity, and Google's AI Overviews pull answers from trusted, authoritative sources. What do those trusted sources have in common? High domain authority.
AI systems are trained on the web's most authoritative content — and they keep citing high-authority sources in their responses. A site with DA 20 is unlikely to be referenced by an AI assistant. A site with DA 60+ publishing clear, factual, well-structured content? That's exactly the kind of site AI tools trust and surface first.
The takeaway: Improving your Domain Authority isn't just an SEO play anymore — it's an AI visibility strategy. If you want your business cited by ChatGPT or featured in Google AI Overviews, building DA is non-negotiable. Pair link-building with Schema.org structured data, a clear About page, and answer-first content so AI systems can easily extract and cite your expertise.