TL;DR
A link from a large publication with nothing to do with your industry, or a link from a small site precisely about what you do. The tools say the first. My experience says the second, more often than the metrics suggest, and the question keeps coming up because authority is easy to measure and relevance is not.
Given the choice between a link from a large publication with nothing to do with your industry, and a link from a small site that is precisely about what you do, which is worth more?
The tools will tell you the first. My experience says the second, more often than the metrics suggest, and the reason the question keeps coming up is that authority is easy to measure and relevance is not.
Why the metrics favour authority
Because it is the measurable half.
Domain authority scores are calculable from a link graph. Relevance requires understanding what a page is about and whether that has anything to do with you. So every tool leads with a number for the first and offers nothing for the second, and the thing that gets measured becomes the thing that gets pursued.
That is a reporting artefact, not a finding about how search works.
What the published work suggests
Nobody can isolate this cleanly, and anyone claiming to has overstated it. But there is a data point worth having.
Ahrefs ran a correlation study across 44,589 non-branded keywords and found the sum of organic traffic to the referring pages correlated with rankings better than the count of referring pages. Their own framing is careful and so is mine. It is a rank correlation on a keyword sample, not proof about your site.
But note what that measures. Traffic to the referring page is a rough proxy for whether the page is genuinely about something people search for. It is closer to relevance than a domain-level score is, and it outperformed the count.
The case I keep seeing
Two sites in the same market, from an audit I ran. The client had 3,575 referring domains. The competitor had 1,853, and roughly twice the traffic and more than twice the top-three rankings.
I cannot prove the composition from that data and I will not pretend otherwise; I did not do a link-by-link teardown of a competitor’s profile. But when a site with half your referring domains beats you that comprehensively, the count is demonstrably not the variable, and something the count cannot see is doing the work.
The whole comparison is written up here and it is the clearest example I have.
How I would actually decide
The question is usually theoretical, because you rarely get to choose. When you do:
- Take relevance when the topic is close and the site is real. A trade publication, a supplier, an industry body, a genuine practitioner blog. These links tend to come with context, since the surrounding text is about your subject, and they often bring traffic that converts.
- Take authority when the relevance is at least plausible. National coverage of your business is worth having even if the publication is general, because it is a real editorial mention and those are rare.
- Take neither if it is a placement. A high-authority link from a page nobody reads, in a section built for links, is the thing both metrics fail to catch. The sales call test sorts these faster than any score.
Google’s spam policies put the line in the same place, and it has nothing to do with authority or relevance: link spam is “creating links to or from a site primarily for the purpose of manipulating search rankings.” A placement fails on intent regardless of how either metric scores the host.
The reframe I would rather leave you with
This is a false choice in most real situations, because you are not selecting from a menu. You are asking who might plausibly mention your business, and the answer is almost always people in your industry. That means the realistic link is the relevant one whether or not it is the theoretically superior one.
The businesses that agonise over this are usually the ones buying links, because buying is the only context where you genuinely choose. If you are earning them, relevance is not a preference. It is a description of who was ever going to link to you.
The short version
- Authority is favoured because it is measurable, not because it wins.
- Traffic to the referring page correlated better than referring page count across 44,589 keywords.
- 3,575 referring domains lost to 1,853 in a market I audited. Count was not the variable.
- Take relevance when the site is real and the topic is close.
- Take authority when relevance is at least plausible.
- Take neither if it is a placement, however the metrics score it.
- It is a false choice unless you are buying. Earned links are relevant by construction.
If a site should be ranking and it isn’t, that’s the work I do. Link building covers what is worth pursuing and what is not. If you’re not sure which of several plausible problems is costing you, that’s what an SEO audit is for.










