External links are hyperlinks on a webpage that direct users to other websites or web pages outside of the current domain. These links can be either text-based or graphical and are typically underlined or highlighted to distinguish them from regular text. External links are an essential component of the internet’s interconnected structure, allowing users to explore and navigate the web. They also play a significant role in search engine optimization (SEO), as search engines use them to determine the relevance and credibility of a website. However, webmasters should be careful when linking to external sites, as linking to low-quality or spammy sites can harm a site’s reputation and ranking.