Domain Authority
A third-party score from Moz predicting how well a domain might rank, based mainly on its links. Google does not use it.
Domain Authority (Moz), Domain Rating (Ahrefs) and Authority Score (Semrush) are each tool's estimate of a site's link strength on its own scale. They are useful for comparing sites within the same tool, but they are not Google metrics, and Google has said repeatedly that it does not use them.