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Why do some websites directly jump the domain name of abc.com to www.abc.com?
This is convenient for SEO optimization, because search engines with and without www seem to be two different sites. If you don't jump, that is, the search engine will put two websites with the same content, and the weight will be scattered or even reduced or reduced. So we need to redirect one of them, 30 1, which is beneficial to inclusion and search engine ranking.