The significance of user experience (UX) in web design lies in its ability to enhance the interactivity and usability of a website. A well-designed UX ensures that users can navigate the site easily, find relevant information promptly, and engage with content seamlessly. Good UX leads to increased customer satisfaction, lower bounce rates, and improved conversion rates. It's not just about aesthetics — it involves understanding user needs, managing accessibility, and optimizing performance to create a pleasing and efficient experience that keeps users coming back.