Backup & Disaster Recovery
Backup & Disaster Recovery (BDR) ensures business continuity during outages and cyber attacks. 2026 best practice: 3-2-1-1-0 rule (3 copies, 2 media, 1 offsite, 1 immutable, 0 verification errors). Microsoft stack: Azure Backup for VMs/files, Azure Site Recovery for failover, Microsoft 365 Backup for SaaS data.