Domain Authority

Domain authority is a search engine ranking score developed by Moz that predicts how likely a website is to rank on search engine results pages. It is calculated on a logarithmic scale from 1 to 100 based on factors including backlink quality, quantity, and the diversity of linking root domains. While not a direct Google ranking factor, it serves as a useful comparative metric for evaluating a site's competitive strength against others in the same niche. Why it matters: domain authority gives marketers a quick benchmark for gauging how difficult it will be to outrank competitors for a given keyword. A local business website might have a DA of 20 to 35, while established national brands often score 70 or above. Because the scale is logarithmic, moving from 20 to 30 is significantly easier than moving from 60 to 70, which requires exponentially more high-quality backlinks and content authority. Similar metrics exist from other providers, such as Ahrefs Domain Rating and SEMrush Authority Score, each using slightly different methodologies but serving the same purpose. To improve domain authority, focus on earning links from reputable, topically relevant websites, publishing authoritative content that naturally attracts citations, and removing or disavowing toxic backlinks that drag your score down. Tracking DA over time alongside organic traffic trends helps validate whether your SEO investments are producing measurable competitive gains.