Server Error is a 5xx error indicating the server failed to fulfill a valid request.
It matters because technical issues can prevent great content from being discovered, rendered, indexed, or trusted. Strong technical foundations protect rankings during redesigns, migrations, content expansion, and platform changes.
Example
A page returns a 500 response when an application error prevents rendering. Check server logs and the affected request before retrying; changing the page’s SEO title will not repair the underlying server failure.