What is Domain Authority?

Domain Authority (often shortened to DA) is a score between 0 and 100 that tries to estimate how strongly a website is likely to rank in search results. The higher the number, the better the chance of ranking well. Think of it as a credit score for your domain: a quick temperature check on how credible you look in Google's eyes.

Important to know: Domain Authority is not something Google calculates or uses itself. It was invented by an SEO company (Moz) to provide a comparable figure. Other tools have similar metrics under different names. It is therefore an external estimate — a useful guide, but not the final word.

The score is largely built on how many and how good your backlinks are. A brand-new site starts near zero and climbs slowly as other sites begin linking to it.

Why does Domain Authority matter for your business?

DA is mainly useful for comparison. You can quickly see if a competitor stands stronger than you, or if a site you want a link from is worth pursuing. It gives a feel for the playing field without digging through lots of detail.

But do not fixate on the number. The goal is never to "raise DA" for its own sake — it is to get customers. DA is the thermometer, not the medicine.

Domain Authority in practice

Say you are considering sponsoring a local organisation to get a link from their site. If you check their DA and it is decent, the link may be valuable. If it is near zero and the site looks shabby, it may not be worth the effort.

Similarly, you can measure your own DA once or twice a year to see whether your SEO work is moving in the right direction over time — without chasing every small bump on the scale.