But that's when there's no redirection.
Use redirects to forward traffic to the new URL and you'll have a happy visitor who's still getting to where they wanted to go, even though the URL is different. You've taken them directly from page A to page B.
When a page returns a 404 status code (or another not found error, such as 410), search engines will quickly remove it from their indexes — meaning it will no longer hold any rankings on the SERPs it owns.
And, let’s not forget, any backlinks that point to a 404 page will not be counted by the algorithm and therefore, are wasted (yes, this does happen and analysis of some of the world’s most popular brand websites revealed that there are literally thousands of great links being wasted due to this issue).
Forgetting to implement redirects can really lead to lost search engine rankings as well as unhappy users.
So, whether you’re redeveloping your website and the vietnam mobile database URL structure of your pages is changing, moving to a new domain, or you’re regularly cleaning up old content, you need to understand the importance of redirects, when you should use them, and which type to use.
When to use redirects
You should use redirects if:
You move the URL of a web page (from URL A to URL B).
You deleted a page that was receiving traffic or had backlinks pointing to it.
You redevelop your website and the structure changes.
You move your website to a new domain name.
You merged two or more sites.
You migrate from to S.
You need to prevent duplicate content on trailing slash URLs or non- URLs.
Sometimes you just need to redirect a single URL (or a series of single URLs) or a directory on your site. Other times, you need to redirect an entire domain. But you need to understand that depending on the situation and your end goal, you'll need to use different types of redirects.