Strictly speaking, air-gapped originally meant physically isolated, no network connections at all. But in practice, the definition has broadened a bit, especial

Strictly speaking, air-gapped originally meant physically isolated, no network connections at all. But in practice, the definition has broadened a bit, especially in enterprise and defense settings. Today, it may include closed private networks with no internet access, still isolated, but with internal connectivity for practical reasons (like backups, logging, or internal auth).