What is use of 301 response status code?

• It indicates that a resource has been permanently moved to the new location specified by the Location:header.

• Means the old URL is obsolete and should replace any references to the old URL with the indicated URL. 

• After there direction,the back in your browser won’t reference the initially requested page.

• As a result of the old page being permanently redirected. 

• 301 status code also indicates to search engines that link equity from the previous URL should be credited to the new one.