User engagement refers to the ways in which visitors interact with a website and its content. This interaction can be measured through various metrics such as time spent on the site, pages viewed, comments posted, social media shares, and click-through rates. High user engagement typically indicates that the content is relevant and valuable to the audience, positively impacting SEO as search engines interpret this as a sign of quality and usefulness. Strategies to enhance user engagement include creating compelling content, improving website usability, and encouraging interactions through comments and social media integration.