What Is Domain Authority? (And Does It Matter?)

1. What domain authority actually is

Domain authority is a third-party score — invented by SEO tool companies, not by Google — that tries to predict how likely a website is to rank, on a scale from roughly 1 to 100. Different tools have their own versions under different names, but they all work in broadly the same way: they analyse a site's backlink profile (how many other sites link to it, and how strong those sites are) and compress it into a single number. It's a model's best guess at link strength, nothing more.

Crucially, the scale is comparative and logarithmic. Moving from 20 to 30 is far easier than moving from 70 to 80, and a “good” score only means anything relative to the sites you compete with. A 40 might be excellent in one niche and unremarkable in another.

2. What Google says about it

Google has stated repeatedly that it does not use any third-party “domain authority” metric, and that it has no single overall “authority score” for a site that it applies to rankings. Google ranks pages for queries using many signals, described in its guide to ranking systems. Links are part of that picture, but they're assessed in context — a relevant, trusted link is worth far more than raw volume, and Google's spam policies actively penalise manipulative link building.

So when a tool shows your “domain authority,” it's that tool estimating your link strength — not reading a number out of Google. The two can disagree, and Google's view is the only one that ranks you.

3. Does it matter, then?

It matters as a proxy, not as a goal. Because authority scores are built from backlink data, they're a reasonable shorthand for “how strong is this site's link profile compared to others.” That's genuinely useful for comparison — sizing up a competitor, judging whether a site is worth pursuing a link from, or tracking your own link growth over time. What it is not useful for is predicting whether a specific page will rank for a specific keyword, because that depends on relevance, intent, and content quality that a domain-wide link score can't see.

The trap is treating the number as the objective. Chasing a higher score for its own sake leads people into buying links and other tactics that inflate the metric while doing nothing for — or actively harming — real rankings.

4. How to use authority scores sensibly

Used well, the number answers comparative questions:

• Benchmarking — is my link profile in the same league as the sites outranking me, or far behind?
• Prospecting — is a site I might earn a link from reasonably strong, or thin and spammy?
• Tracking trend — is my own score drifting up over months as I earn links? Direction matters more than the absolute figure.

An authority checker is handy for exactly these comparisons — checking your score and a competitor's side by side — as long as you remember you're comparing estimates, not Google rankings.

5. What actually raises real authority

If you want the thing the score is trying to measure — genuine standing in your niche — you build it the slow, durable way: publish content good enough that people reference it, earn links editorially rather than buying them, and become a recognised source on your topic. Our guide on building backlinks that actually help covers the white-hat methods. Do that, and the score follows on its own — which is the only order that also moves your rankings.

So: is domain authority worth knowing? Yes, as a comparative gauge. Is it worth chasing? No. Build real authority, use the number to keep score, and never confuse the scoreboard for the game.