A 404 redirect is a process whereby a website redirects a user to a specific page if the requested page cannot be found. This is often used to direct users to a custom '404 error page', which may contain helpful links or a search function to help the user find the content they are looking for. The 404 status code is returned by the web server to indicate that the requested page could not be found. By redirecting the user to another page, the website can provide a better user experience than if a simple "404 error" message is displayed.
