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Another aspect are HSTS (HTTP Strict Transport Security) headers, which can extend to subdomains. If your main web page is available at example.com, and the CM
by perlgeek 2y ago
Another aspect are HSTS (HTTP Strict Transport Security) headers, which can extend to subdomains.
If your main web page is available at example.com, and the CMS starts sending HSTS headers, stuff on subdomain.example.com can suddenly break.