Domain Authority is Moz’s calculated metric for how well a given domain is likely to rank in Google’s search results. It is based off data from the Mozscape web index and includes link counts, MozRank and MozTrust scores, and dozens of other factors. It uses a machine learning model to predictively find an algorithm that best correlates with rankings across thousands of search results that we predict against.
It’s best to use Page Authority (PA) and Domain Authority (DA) as comparative metrics when doing research in the search results and determining which sites/pages may have more powerful/important link profiles than others. While specific metrics like MozRank can answer questions of raw link popularity—and link counts can show the raw quantities of pages/sites linking—the authority numbers are high-level metrics that attempt to answer the question, “How strong are this page’s links in terms of helping them rank for queries in Google.com?”
Understanding Domain Authority
- Domain authority is based on a lot of factors. Primarily, however, these are link profile factors such as how many backward links are pointing to your website and how authoritative those sites are.
- It is very difficult to gain a DA number of 100. Sites like Facebook and Google have it, so don’t be disappointed if you never hit 100.
- DA is difficult to influence directly. You can’t change your DA score like you can change your meta tags