What is the most important part of Off-page SEO?

Backlinks from other websites are the most crucial component of off-page SEO. They act as "votes of confidence" from other sites, signaling to search engines that your content is valuable and trustworthy. The quantity and quality of these backlinks significantly influence your website's authority and search engine rankings. While using keywords in anchor text is a good practice for relevance, it's secondary to the backlink itself. Optimizing page speed is an on-page SEO factor, and internal linking, while important for site navigation and distributing link equity, is also an on-page SEO element.