Domain Authority is a Moz metric (0–100 scale) predicting how well a site ranks in search results. It's calculated from link profile data, so increasing it requires fundamentally changing your backlink profile—which search engines and metric providers update slowly. There is no fast, legitimate shortcut. Sites claiming 20-point DA jumps in 30 days are either starting from near-zero, using private blog networks that eventually tank rankings, or misunderstanding variance in Moz's own recalculations. The fastest realistic approach combines three efforts simultaneously. First, earn 15–30 contextual backlinks per quarter from domains with higher DA than yours—guest posts on industry publications, digital PR that lands CBC or Globe and Mail mentions, or resource page placements on university sites. Quality beats quantity: one DA 60 link from a Toronto newspaper outweighs fifty DA 15 blog comments. Second, audit your existing backlink profile with Ahrefs or Semrush and disavow obvious spam—scraped directories, foreign-language link farms, or sitewide footer links from irrelevant sites. Toxic links dilute your profile. Third, build content depth so your site becomes linkable: comprehensive guides, original data, or tools that naturally attract references. At Ottawa SEO Inc., we see clients gain 5–8 DA points in six months with aggressive outreach (40+ placements), but only if they start between DA 20–40. Sites above DA 50 move slower because the scale is logarithmic. Sites below DA 15 can jump faster initially but need foundational technical fixes first—HTTPS, proper indexing, and basic on-page SEO. Don't obsess over DA itself. Google doesn't use it for ranking; it's a correlation metric. If your actual organic traffic and rankings improve from genuine link building, DA will eventually follow. Chasing the number with low-quality links damages real search performance, which is what actually drives revenue.