(DA) is a number (metric) that indicates the authority of your website. The higher your domain authority is, the greater are your chances of ranking higher in search engine result pages (SERPS) and getting more organic traffic. The Domain Authority metric was developed by Moz, but other companies have created similar metrics that rank domains based on a number of factors and give them a rating from 0 to 100. The idea of ranking domains based on their authority emerged from PageRank that was introduced by Larry Page (one of Google’s Founders) and it is used until today as a way to measure the importance of webpages and websites. In this article we will cover the following topics: What is domain authority? How is the domain authority calculated? Domain authority VS Page authority? How to increase domain authority What is the domain authority (DA) of a website? The DA of a website is a score between 0 to 100 (the higher the better), that tries to predict how well a website will rank on search engines. It is not the same as the ranking score used by Google (PageRank) which can actually influence your rankings. Moz (and other companies who have similar systems) are trying to simulate the Google ranking algorithm by taking into account all known factors that can possibly affect rankings, and give a score to domains that can be used for comparison purposes only.