A 3-way link exchange is an advanced SEO technique that involves three different websites collaborating to exchange links in a triangular pattern. This strategy aims to create a more natural backlink profile and increase the authority of each participating domain. Domain A links to domain B, domain B links to domain C, and domain C then links back to domain A. This triangular link exchange helps improve search engine rankings by diversifying link sources, enhancing website visibility, and ultimately boosting organic traffic for all three domains involved.