What do you mean by 301redirect?

301 redirecting is a method of redirecting users and search engines from the old page URL to a new page URL. The 301 redirect is used to pass the link traffic from the old URL to the new URL. It is a permanent redirect from one URL to another site without typing the URL of the new site. It helps you maintain the domain authority and search rankings when the URL of a site is changed for any reason.Furthermore, it allows you to associate common web conventions with one URL to improve the domain authority; to rename or rebrand a site with a new URL; to direct traffic to a new website from other URLs of the same organization. So, you must set up a 301 redirect before moving to a new domain.