Domain Rating / Domain Authority is a score that most SEO tools, such as Moz, SEMrush, and Ahrefs, used to calculate the overall SEO strength of a site. The score depends on several factors, including the quality of referring domains and the number of backlinks.
The score is built on a logarithmic scale and it ranges from 0 to 100. Thus, it’s difficult to increase this score from 90 to 91 than it is to increase from 25 to 27. Websites with higher scores are expected to rank better for search queries than websites with lower scores, all other parameters equal.
It’s essential to note that Domain Authority isn’t an official Google ranking factor. But it’s still important to measure this metric because it’s calculated based on parameters that are ranking factors. If you want to rank on the first page of search results, you must work hard towards increasing your Domain Authority.
Also, it’s worth tracking Page Authority for your most valuable landing pages. This metric monitors the authority of specific web pages instead of the entire domain.