What is domain authority (DA)?

Developed by SEO software company Moz.com Domain Authority (DA) has served for years as a predictive measure of ranking ability for domains enabling search marketers to more accurately judge the value of a site and their work. DA scores can be found in a number of Moz tools including the link explorer, mozbar, keyword explorer, campaigns and via the MOZ API.

The Moz algorithm gauges the authority and trustworthiness of a site based on the quantity and quality of the backlinks pointing to a domain. Using data from scoring calculations factored into an advanced machine-learned model Moz determines an overall score out of 100 with higher scores indicating a higher likelihood of ranking in the top positions of the search engine results pages (SERPs). DA is not a ranking signal and is not used in Google’s ranking calculations.

Domain Authority along with other metrics from Moz.com offer search marketers insight into how to make smart decisions about the sites they work on, helping them prioritise which sites they want to earn links from alongside providing comparison data for competitors.

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