Digital Marketing Glossary
Domain Authority
Domain Authority is a third-party metric, originally created by Moz, that estimates how likely a website is to rank in search results compared with other sites, mainly based on its backlink profile. Similar scores from other tools use different names and formulas. Google does not use any of these third-party scores as a ranking factor.
Fire Source Media Editorial Team Updated
Why Domain Authority Matters
Authority scores give a quick, comparable view of a site's link profile against competitors. They can help prioritize outreach and spot unusual link changes.
The risk is treating the score as a goal. A higher number does not cause rankings; useful content and earned backlinks matter more.
How It Works
Tools crawl the web, count linking domains, weigh their quality, and produce a score, often on a 1 to 100 scale. Scores are relative and can shift when the tool updates its data.
Compare scores only within the same tool and alongside the actual pages that rank for target queries. Off-page SEO work affects the inputs, not the score directly.
Domain Authority Example
Hypothetical example: a roofing company sees a competitor with a higher authority score ranking above it. Reviewing the competitor's links reveals local news coverage and supplier pages, so the company pursues similar legitimate local mentions.
Domain Authority vs. Page Authority
Domain-level scores estimate a whole site's strength, while page-level scores estimate one URL. A strong page on a modest domain can still rank well for a specific query.
Common Mistakes
A common mistake is buying links to raise the score. Manipulative links can violate search guidelines and harm visibility.
Putting It Into Practice
Use authority scores as one diagnostic signal in competitive research, not as a key performance indicator for an SEO program.
Track qualified organic traffic and enquiries as the outcome measures. Explore SEO services for link and content work with defined scope.
Frequently Asked Questions
Does Google use Domain Authority?
No. It is a third-party estimate; Google uses its own systems.
What is a good Domain Authority?
It depends on competitors. Compare against sites ranking for the same queries.