QUESTION
What are they and how to use the server-side redirect?
RESPONSE
The server-side redirect is a system of automatic redirection from one page to another. The difference compared to redirect made with HTML or Javascript code is that the redirection is performed by the web server by sending in response to the request of a client code (HTTP code 301). Its use is very useful for searching for information for the user to both search engines. Let’s see why: often that a Web page is no longer available or that it has been replaced with a new, and that the new URL is different. To avoid losing the user (who will not find the page you searched) and to notify users and spiders that the page was replaced with a new, is to help redirect the 301, which will redirect the user and the spider to the new page. In this way the search engine will be a sort of replacement of old with the new page, resulting in lost not see the positions acquired.