Glossary
/
domain-authority
Domain authority: third-party SEO metric definition, Moz DA vs Ahrefs DR, backlinks, limitations, and e-commerce tips.
Updated on
June 4, 2026
Domain authority (often abbreviated as DA) is a third-party SEO metric that estimates the strength or credibility of a domain name in the eyes of search engines, primarily based on its backlink profile. It is calculated by tools like Moz, Ahrefs, or Semrush. It is not an official Google score, but a useful indicator for comparing sites and managing a link-building strategy in e-commerce SEO.
Domain authority is useful for putting a site's SEO strength into perspective, but it must remain a management indicator. A store does not grow by chasing a score: it progresses thanks to useful content, quality links, and a coherent structure.
Summary
Definition of domain authority in SEO
Domain authority summarizes in a single number (often out of 100) the theoretical ability of a domain to rank in search results. It is based on statistical models correlated with observed ranking, not on internal Google data.
Similar metrics depending on the tools:
To fully understand this concept, we find Domain Authority (DA): Moz ( moz.com/domain-analysis ), Domain Rating (DR): Ahrefs, Authority Score: Semrush and Page Authority (PA): Moz, at the level of a specific URL (product page, article).
Useful distinctions:
To fully understand this concept, we find Domain authority vs PageRank: PageRank was the historical Google algorithm; it is no longer publicly displayed. DA is a private metric of SEO publishers, Domain authority vs page authority: the domain covers the entire site; the page targets a specific URL (blog guide, collection), Domain authority vs backlink: backlinks are the links received; DA is an estimated synthesis of them, Domain authority vs domain name: the domain name is the web address; DA measures its perceived SEO reputation, Authority vs organic traffic: a site can have a moderate DA but high traffic on well-targeted long-tail niches and Authority vs on-site content: quality of pages, speed, UX matter as much as external links.
Why Domain Authority Matters for E-commerce Sites
Merchants often compare their DA to that of competitors or marketplaces. Useful for steering, to be interpreted with caution.
For an online store, this notably includes Competitive Benchmark: positioning your store against industry leaders, Netlinking Prioritization: measuring the impact of a PR campaign or partnerships, Due diligence: evaluating a domain before acquisition or redesign, Outreach: certain partners filter sites based on minimum DR/DA, and Long term: authority is built over months, not in a few days.
A young Shopify store generally displays a low DA: normal. Google does not penalize youth if the content meets the search intent. DA primarily helps to guide efforts (linkable content, editorial backlinks) rather than predict an exact position on a query.
Google regularly points out that there is no official authority score communicated to webmasters (Google Search Central). Treat DA/DR as clues, not ranking guarantees.
How to interpret the evolution of a domain's authority
SEO tools estimate domain authority based on proxy signals, including:
Concretely, this notably includes the Number and quality of backlinks: links from recognized sites vs spam, Diversity of referring domains: multiple unique sources rather than a single massive site, Natural link profile: diverse anchors, no artificial schemes, Domain history: age, thematic continuity, and Internal links: solid linking redistributes value between pages.
Typical evolution of a DTC brand:
Concretely, this notably includes Shopify Launch: low DA, few referring domains, Blog publishing, guides, PR: first niche media backlinks, Partnerships, editorial affiliation: DR progresses gradually, and Deep pages (collections, product sheets) rank thanks to internal linking + global authority.
Use case: indie cosmetics brand vs large beauty marketplace. The marketplace shows a high DR (thousands of backlinks, press, comparison sites). The indie brand has a modest DR but ranks for "sensitive skin vitamin C serum" thanks to a comprehensive product sheet, reviews, expert blog, and a few links from beauty blogs. Moral of the story: overall DA guides the strategy, but a niche query is also won through page-by-page relevance.
Domain authority for a Shopify store
Shopify does not assign domain authority: it is your custom domain and your editorial strategy that build authority.
In Shopify, we notably find Custom domain: focus backlinks and history on brand.com, not myshopify.com, Shopify Blog: host linkable content (guides, studies) on your domain, Internal linking: link blog, collections, sheets, glossary (Shopify blog), Google Search Console: Links report (real referring domains indexed by Google), Ahrefs / Moz / Semrush: DA, DR tracking, monthly evolution and Avoid: buying links, spam directories (risk of Google manual action).
E-merchant checklist:
In Shopify, we notably find Baseline DA/DR at launch or redesign, Content goal: 2 to 4 linkable assets per quarter, Measure new referring domains in GSC, Compare evolution to 2 or 3 direct competitors, not to Amazon and Prioritize organic traffic and conversions, not the score alone.
Shopify offers a decent technical SEO base (HTTPS, URLs, sitemap). Domain authority is mostly earned off-platform: PR, partnerships, cited content.
Best practices and common mistakes
Build editorial backlinks rather than chasing DA scores.
Useful content first: guides, comparisons, industry data.
Coherent internal linking: product silos, blog, resources.
Track a stable metric: use the same tool and same period for comparison.
Patience: authority grows over months.
Combine on-page + off-page: titles, Core Web Vitals, comprehensive pages.
Classic mistakes:
Believing a high DA guarantees a top 3 ranking for all queries.
Buying link packs to "boost DA" (possible penalty).
Comparing Moz DA and Ahrefs DR as if they were identical (different scales).
Ignoring on-site content while obsessing over third-party metrics.
Backlinks pointing only to the home page: deep pages need them too.
Giving up on SEO because "competitor DA is 70, ours is 15": accessible niches do exist.
The key takeaways about domain authority
To keep in mind, we notably find Domain authority = third-party metric estimating the SEO strength of a domain, DA (Moz), DR (Ahrefs), Authority Score (Semrush): not an official Google score, mainly linked to the backlink profile and domain history, useful in benchmarking and netlinking; does not replace content and UX and Shopify: custom domain, blog, editorial links, GSC + SEO tools.
Associated terms, FAQ, and going further
Associated terms
Notions related to this topic notably include Backlinks: inbound links that feed authority, E-commerce SEO: global strategy including authority, Domain name: measured web address, Canonical link: consolidation of on-site signals, and Client acquisition: organic traffic linked to SEO.
FAQ
Domain authority and authority of domain: the same thing?
Yes. Domain authority is the English term; autorité de domaine is the common French translation in SEO. It is often abbreviated as DA.
Does Google use DA to rank websites?
Google does not publish a DA score. It uses hundreds of proprietary signals (content, links, page experience). The DA of third-party tools sometimes correlates with ranking but is not read directly by Google.
What DA should you aim for with a Shopify store?
There is no universal threshold. Compare yourself to direct competitors in your niche. An SME can thrive with a modest DA on targeted queries if the content and intent are well-served.
DA or DR: which one to follow?
Choose one tool and stay consistent over time. Moz (DA), Ahrefs (DR), and Semrush (Authority Score) use different models; do not mix scales within the same table.
Go further
Notions related to this topic notably include Complete E-commerce SEO Guide, Content marketing and SEO traffic, Increase organic traffic, Is Shopify good for SEO?, Internal link strategy, and return to the Qstomy e-commerce glossary.
Sources: Moz (Domain Authority), Google Search Central (SEO Starter Guide).
Enzo
June 4, 2026
