Anchor text is the clickable text in a hyperlink that provides a description of the linked content. It is usually underlined and appears in a different color than the surrounding text to distinguish it as a link. Anchor text is an essential element of SEO, as search engines use it to understand the context and content of the linked page. It also helps users to understand the purpose and relevance of the linked content before they click on it. Properly optimized anchor text can improve a website’s search engine ranking by providing relevant information to search engines and improving user engagement and click-through rates.