A 302 redirect is a temporary redirect from one URL to another. It tells web browsers and search engines that the original page has been moved temporarily, and they should continue to index the original URL. This is useful when a website is undergoing maintenance or when content is being updated. When a user tries to access the original URL, they are automatically sent to the new URL without changing the original in their browser's address bar. This helps maintain user experience while allowing website owners to manage content changes without losing traffic or search engine rankings.