Domain Authority (DA)
Domain Authority (DA) is Moz's 1–100 score predicting how likely a website is to rank in search results, based on its link profile. Google does not use it.
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What Domain Authority (DA) means
DA is calculated by a machine-learning model over Moz's link index and is best used to compare sites relative to each other. It is similar in purpose to Ahrefs' Domain Rating and Semrush's Authority Score, but the numbers differ between tools.