A 301 redirect is a permanent way to send both users and search engines from one URL to another. This is useful when a webpage has moved to a new address, ensuring that visitors can still access the content without encountering a broken link. It also helps maintain the original page's search engine ranking by transferring its authority to the new URL. When implementing a 301 redirect, it's important to update any internal links and inform search engines about the change. This can improve user experience and ensure that your website remains optimized for search engines, helping to retain traffic and visibility.