External linking refers to the practice of creating hyperlinks on a website that direct users to pages or resources located on a different domain. These links connect your site to relevant, authoritative, or supplementary content elsewhere on the internet. External links are important for providing additional value to users, supporting claims with credible sources, and enhancing the overall user experience. In the context of search engine optimization (SEO), well-chosen external links can also signal trustworthiness and relevance to search engines, potentially improving a site's ranking.