To send onward to somewhere other than where the request pointed. A redirect keeps an old address working.
Re- (Latin, again) attached to direct, from Latin dirigere (to arrange in lines, to guide): dis- (apart) + regere (to guide, to rule); a redirect sends the same asking along a new line rather than the one it started on.
To send onward to somewhere other than where the request pointed. The root's guiding is unbroken by the change of destination — a redirect keeps an old address working by quietly ruling where it actually leads.