99.95% (Azure VM SLA in VMSS) With Availability Zones AKS offers 99.99% for 2+ VMs AKS Availability SLA Downtime per year Downtime per month 99,999% 5m 15.6s 26.3s 99,99% 52m 35s 4m 23s 99,95% 4h 22m 21m 54s 99,9% 8h 45m 43m 49s 99,5% 1d 19h 49m 3h 39m 47 minutes