Domain Authority (DA) is a proprietary search engine ranking score developed by Moz that predicts how well a website will rank on search engine result pages (SERPs). It is a comparative metric, useful for benchmarking against competitors and tracking a website's relative strength over time.
Domain Authority is calculated using a range of factors, including the number of linking root domains and the quality of those external links. It is a logarithmic scale from 1 to 100, meaning it is significantly easier to improve your score from 20 to 30 than it is from 70 to 80. Websites with high DA scores generally have more high-quality backlinks from other reputable sites, indicating to search engines that the content on the domain is trustworthy and authoritative. Google does not directly use Moz's DA in its ranking algorithms, but it correlates strongly with Google's own internal measures of domain strength.
For B2B organisations, a strong Domain Authority is not merely a vanity metric; it directly impacts visibility and lead generation. As competition intensifies online, particularly within specialist B2B niches, a higher DA contributes to better organic search rankings for critical industry keywords. This increased visibility means more qualified traffic to your website, enhancing opportunities for inbound leads and demonstrating thought leadership. In the AI-driven search landscape of 2026, where algorithms prioritise quality and relevance, a robust DA signals to both search engines and potential clients that your content is a credible source of information, supporting efforts in AI Brand Awareness and AI Lead Generation.