301 重定向
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301 重定向是从一个 URL 永久重定向到另一个 URL，会将约 90-99% 的链接权重（排名能力）传递给目标 URL。301 重定向用于更改域名、合并域名或迁移到新的 [[tld|TLD]] 时。
示例
Migrating from old-brand.com to new-brand.com using 301 redirects preserves most of the original domain's SEO value.