301 Redirect
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A 301 redirect is a permanent redirect from one URL to another that passes approximately 90-99% of link equity (ranking power) to the destination URL. 301 redirects are used when changing domain names, consolidating domains, or migrating to a new [[tld|TLD]].
Example
Migrating from old-brand.com to new-brand.com using 301 redirects preserves most of the original domain's SEO value.