Moved Temporarily / Found
300's - Redirection
The requested resource resides temporarily under a different URI. Since the redirection might be altered on occasion, the client SHOULD continue to use the Request-URI for future requests. This response is only cacheable if indicated by a Cache-Control or Expires header field.
Requests for a specific page will be temporarily redirected to another page. Redirects are used frequently when moving/removing pages to prevent users from experiencing Error 404 for a missing page when referred from external sites' links. The decision to use a permanent (301) or temporary redirect (302) can potentially impact page weight and SEO.
HTTP/0.9 and later