Azure Key Vault Replication: Why Paired Regions Alone Don’t Guarantee Business Continuity

Good point. Key Vault redundancy is helpful, but it should not be the whole continuity plan.

For business continuity I would also validate client behavior: retry policy, DNS/private endpoint dependencies, managed identity availability, and what happens if the app cannot reach the vault during startup. In many outages the weak point is not just the vault data, but application assumptions around token acquisition, network path, and failover timing.

For critical secrets and certificates, I would also enable soft delete and purge protection, document recovery ownership, and decide which objects need explicit backup/restore procedures. The plan should include a practical test: can the application still start or fail over when Key Vault access is degraded?

Useful reference: https://learn.microsoft.com/azure/reliability/reliability-key-vault