Backlinking in SEO refers to the process of getting other websites to link back to your website. Backlinks are important for SEO because search engines like Google view them as votes of confidence in ranking pages. The more high-quality backlinks a website has, the more likely it is to rank higher in search engine results pages. Backlinks can improve rankings, boost credibility, help search engines find new pages, and send referral traffic to a site. There are different types of backlinks, including natural links, manual links, self-created links, and editorial links. Building and managing backlinks is an important aspect of SEO strategies.