Backup

Meaning

A backup is an independently stored copy of data created to enable recovery after loss, corruption or compromise. Modern understanding emphasises that a usable backup must be restorable, isolated from primary systems, and regularly tested, not just successfully written. Backups are viewed as the final safety net in a layered resilience strategy, especially against ransomware and operator error.

Why It Matters

Backup is important in modern data and cyber resilience because it shapes protection, monitoring and recovery design.