What Is Domain Authority and Does It Actually Matter?
If you have ever had a conversation about SEO, Domain Authority will have come up at some point. It appears in agency reports, gets cited when justifying link-building budgets, and turns up in everything from blog posts to sales pitches. Yet there is a surprising amount of confusion about what it actually is, what it tells you, and whether you should be paying any real attention to it.
Some businesses obsess over the number. Others have been told it is the key to ranking well on Google. A few have even paid for links specifically to move it up. Most are not quite sure what to make of it.
This guide explains what Domain Authority really means, how it is calculated, and how to use it in a way that actually benefits your business. We will also clear up some of the most common misconceptions that trip people up.
What Is Domain Authority?
Domain Authority (DA) is a score created by the SEO software company Moz. It runs on a scale of 1 to 100 and is designed to predict how well a website is likely to rank in search engine results. The higher the score, the stronger the site’s competitive position in organic search.
It is important to understand from the outset that DA is a third-party metric. It was created by Moz, not by Google. Google does not use Domain Authority as a ranking factor, and it never has. Despite the official-sounding name, it is Moz’s interpretation of a website’s authority, based on their own data and methodology.
Most major SEO platforms have developed their own equivalent. Ahrefs uses Domain Rating (DR), SEMrush uses Authority Score, and other tools have their own versions. They all measure broadly similar things but use different data sets, so you will often see different numbers for the same website depending on which tool you use. This is worth bearing in mind if you are comparing figures across reports.
How Is Domain Authority Calculated?
Moz calculates DA using a machine learning model that draws primarily on backlink data. Here is what goes into it.
Backlinks and Referring Domains
The foundation of DA is your backlink profile: the number of external websites linking to yours and the quality of those links. A particularly important factor is the number of unique referring domains, meaning the number of distinct websites linking to you.
One hundred links from a single website carry far less weight than ten links from ten different websites. Diversity matters. A natural, healthy backlink profile contains links from a range of relevant, reputable sources.
Link Quality vs Link Volume
Above a certain threshold, quality becomes more important than volume. According to SEMrush research from 2024, the quality of referring domains matters roughly three times more than quantity once a site moves beyond DA 40. Ten links from high-authority, relevant websites will move your score more meaningfully than fifty links from low-quality directories.
This is one reason why chasing volume without regard for quality tends to plateau quickly.
Other Contributing Factors
Beyond backlinks, Moz’s model also considers domain age, spam score (the proportion of low-quality or potentially harmful links pointing to your site), internal link structure, and broader technical SEO health. These play a supporting role rather than a dominant one, but they contribute to the overall picture.
Does Google Use Domain Authority as a Ranking Factor?
No. This is probably the most important thing to understand about DA, and it is worth being direct about it.
Google does not use Moz’s Domain Authority score in its ranking algorithm. It has never confirmed it does, and Moz has never claimed otherwise.
The reason this misconception persists is because of correlation. Websites with higher DA scores often do rank well on Google. But that is because both DA and Google rankings are influenced by the same underlying signals, particularly the quality and volume of backlinks. Doing the work that earns strong rankings also tends to improve your DA as a side effect.
As our guide to off-page SEO explains, building a credible backlink profile is one of the core pillars of a strong SEO strategy. DA reflects that work, it does not create it.
What Is a Good Domain Authority Score?
There is no universal answer to this, because DA is a relative metric, not an absolute one. A good DA score is one that is competitive within your specific niche, not one that compares favourably to Amazon or the BBC.
A regional professional services business competing with similar-sized local firms might be in a strong position at DA 22 if its direct competitors sit at DA 15–20. A national e-commerce brand competing against established retailers might need to be at DA 50 or above to be in contention.
It is also worth understanding that the scale is logarithmic. Moving from DA 10 to DA 30 requires far less effort than moving from DA 50 to DA 70. Each increment becomes harder as you go higher, because you are competing for links with an increasingly authoritative pool of sites. Realistic improvement benchmarks, with consistent SEO effort, look something like this:
- 6 months: +3–5 points
- 12 months: +5–10 points
- 24 months: +10–18 points
Sustainable growth is gradual. Any service promising dramatic DA improvements in a short timeframe should be approached with caution.
Why Domain Authority Still Matters
Despite its limitations, DA remains one of the most widely referenced metrics in SEO. There are three legitimate ways it adds value.
Competitive Benchmarking
Checking your DA alongside your closest competitors gives you a quick read on where you stand in terms of link authority. If you are consistently lower than the top-ranking sites in your space, that is a signal that link building should be a priority. This kind of competitor analysis is a useful starting point when building out an organic search strategy.
Evaluating Link Opportunities
When you are deciding whether to pursue a backlink from a particular website, whether through a guest post, a partnership, or a directory listing, a quick DA check helps you assess whether the opportunity is worth your time. A link from a DA 40 industry publication is likely to be more valuable than a link from a DA 8 directory that has no clear topical relevance to your business.
Tracking Long-Term Progress
Over a 12 to 24-month period, a rising DA can serve as a useful directional signal that your link-building and content efforts are working. It will not tell you everything, but a consistent upward trend alongside improving organic traffic and rankings is a positive indicator.
To underline why backlinks matter so much: a 2024 Ahrefs study found that 96.55% of all content receives zero organic traffic from Google, largely because it has no backlinks. Getting your link profile right is not a nice-to-have.
When Domain Authority Can Lead You Astray
For all its usefulness, DA can also be a distraction, or worse, a metric that encourages the wrong behaviour.
Treating DA as a Google ranking factor. It is not. Building your entire SEO strategy around moving a third-party score is working one step removed from what actually matters.
Comparing yourself to irrelevant sites. Seeing that your DA is 25 and Google’s is 100 tells you nothing useful. Always compare your DA to direct competitors in your niche.
Buying links to inflate your score. This is worth addressing plainly, because it still happens. Paid links from irrelevant or low-quality websites may temporarily nudge your DA upwards, but Google’s algorithms are designed to detect and devalue unnatural link patterns. Google’s March 2024 core update penalised many sites with inflated backlink profiles built through link schemes. The risks far outweigh any short-term gain. Our SEO services are built entirely on white-hat methods for exactly this reason.
Reporting DA as a business outcome. DA is a directional indicator. If you are showing it to a stakeholder as evidence of SEO success, it needs to be accompanied by real metrics: rankings, organic traffic, and enquiries. A DA score on its own does not pay the bills.
How to Improve Your Domain Authority Over Time
Improving your DA is a by-product of building genuine online authority. Here is what that looks like in practice.
Earn Quality Backlinks
Focus on links from relevant, reputable websites in your industry or local area. Digital PR campaigns, guest content on sector publications, supplier or trade association listings, and earning mentions from local business communities are all legitimate approaches. A handful of high-quality, relevant links will do more for your DA than dozens of low-quality ones.
For businesses looking to compete in their local or regional market, earning citations from locally relevant sources also supports local SEO performance.
Create Content Worth Linking To
The most reliable way to earn links over time is to publish content that is genuinely worth referencing. Original data, detailed guides, practical tools, and well-researched articles attract links without requiring outreach. If your content answers a question that nothing else does as well, it will earn attention.
Our guide on building a customer journey is a practical example of the kind of content that earns links by being genuinely useful rather than just filling space.
Build a Strong Technical Foundation
Authority is fragile if your site has underlying technical problems. A clean site structure, strong internal linking, fast load times, and no crawl errors all support your overall SEO performance and contribute to a healthy DA profile. Our web design and development service builds sites with this in mind from the ground up.
Remove or Disavow Low Quality Links
A backlink audit every six to twelve months helps you identify links from low-quality or spammy websites. If your site has accumulated a significant number of harmful links, disavowing them through Google Search Console protects your profile from being dragged down.
Domain Authority vs Domain Rating vs Authority Score
It is worth briefly clarifying the difference between the main authority metrics used across the industry.
Domain Authority (Moz): Based on a machine learning model drawing on backlink volume, referring domain quality, spam score, and other SEO factors. Updates monthly.
Domain Rating (Ahrefs): Focused more narrowly on the strength of a site’s backlink profile, specifically the quantity and quality of unique referring domains. Updates daily.
Authority Score (SEMrush): A composite score drawing on backlink data, organic search traffic, and website traffic signals. Updates weekly.
Because each tool uses its own database and methodology, the same website will typically show a different score on each platform. The key takeaway: pick one tool and stick with it. Comparing your DA in Moz one month to your DR in Ahrefs the next gives you meaningless fluctuations rather than useful trends.
What Does Domain Authority Mean For Your Business
Domain Authority is a useful compass, but it is not the destination. It reflects the quality of the SEO work you are already doing, particularly around link building and content, rather than creating ranking power itself.
Used sensibly, it helps you benchmark against competitors, evaluate link opportunities, and track directional progress over time. Used poorly, it becomes a vanity metric that encourages the wrong behaviours and can distract from what actually drives results: rankings, organic traffic, and qualified enquiries.
If your DA is lower than your competitors’, that is a prompt to focus on building genuine authority through quality content and a targeted link-building strategy. If your DA is healthy but your enquiries are not, DA is not your problem.
Focus on the real outcomes. DA will take care of itself.
If you would like an honest assessment of where your website stands, we offer a free SEO audit and consultation to give you a clear picture of what is working and where the opportunities are.
