We refactored our website last year. Some pages do not exist. We added aliases for old URLs in the metadata of new files.
------ title: Product Overview summary: Learn about key components and features ... category: reference aliases: ['/docs/tools/overview/','/docs/tools/pr-overview/'] -------
After we refactored our website, we found our SEO ranking dropped.
Is Hugo alias a 301 redirect? Does it affect SEO?