Redirect
Sometimes you may click on a link, and instead of going to the URL that you clicked on, the web server automatically redirects you to another web page. This is known as a Redirect. Redirects can negatively impact your search engine ranking, so for this reason they are discouraged by SEO experts.
Redirects often happen when a link is out of date, a page has been moved or replaced. Sometimes Redirects are only temporary and somewhat unavoidable (as when a page is currently unavailable but will be functioning again soon). Other times, a Redirect may be permanent (such as when a page has been permanently removed or replaced).
There are four HTML response codes you might get that can result in a Redirect. They are: "301: (permanent)" meaning the web page has been permanently moved, "302: (temp)", which indicates a temporary unavailability, "303: (seeother)" which means it's been permanently replaced by another web page, and "410: (gone)" which means that this page has been lost or deleted or replaced. Any of these codes may cause the web server to redirect to another URL.