Domain Authority

Definition

Domain Authority (DA) is a metric developed by Moz that predicts how well a website will rank in search results. Scored from 1 to 100, it is calculated based on the quantity and quality of a site's backlink profile. Similar metrics include Ahrefs' Domain Rating (DR).

Why It Matters for SEO

Domain Authority helps you assess the competitive landscape for a keyword. If the top results all have DA 80+ sites, a new site with DA 15 will face a steep climb. It also helps evaluate the value of potential backlink sources.