5xx Errors: these are server-level errors. They are considered severe. Don’t allow search engines to crawl the page Harm UX, which in turn harms SEO Harm the site’s health Is a lost visit, as the page is unable to be tracked by Analytics software Excessive or prolonged 5xx errors will harm rankings 4xx Errors: these are client-side errors. They are considered less severe. Search engines attempt to crawl the page, depleting crawl budget Harm UX, which in turn harms SEO Harm the site’s health Increase SEO bounce rate Anytime a URL is renamed without a redirect, a 4xx error can…