In simple terms, backlinks are a links from one website back to yours. Search engines view this as a "vote of confidence" or a direct endorsement of your content. If content is the engine of your website, backlinks are the fuel that powers its visibility in search results. In the competitive landscape of search engine optimization (SEO), securing high-quality backlinks is not just a best practice it is a non-negotiable requirement for ranking on the first page of Google, Bing, and other search engines. Backlinks form the foundation of Google's original PageRank algorithm and remain one of its top three most important ranking factors today.