I raised the DA of website from 1 to 10 by using on-page, off-page, and technical SEO. I optimized content with targeted keywords, built quality backlinks, and enhanced site speed and mobile responsiveness. Regular error fixes and improved structure also helped boost our DA. But SEO is a Time taking Process there are other processes too to increase DA Instantly but they are under black hat SEO and your website can be blacklisted too.
I personally don't recommend those practices.
