A 301 redirect is a permanent redirect from one URL to another. 301 redirects send site visitors and search engines to a different URL than the one they originally typed into their browser or selected from a search engine results page.
SEO effect is these redirects also link various URLs under one umbrella so search engines rank all of the addresses based on the ranking from inbound links & merits of target page.
A 301 redirect is an everlasting redirect which passes between ninety-99% of link fairness to the redirected page. 301 refers to the HTTP status code for this sort of redirect. In most circumstances, the 301 redirect is the quality procedure for enforcing redirects on a website.
Redirect 301 is an HTTP response code that is used to constantly redirect visitors from the originally requested address to the main one (other). If viewed from the position of search engines, then 301 redirect makes it clear that a particular page has changed the address, which means that the old address loses its relevance.