Your AZ-305 design must support a mission-critical workload with an RPO of 0 across zones and an RTO under 60 seconds across regions. The Availability Zones documentation recommends that mission-critical workloads use both multi-region and multi-zone solutions together. Is this statement correct?
- AYes Correct
- BNo
Why A is correct: Correct. Azure Availability Zones guidance states that production workloads should use multiple availability zones if the region supports them, and that for mission-critical workloads architects should consider a solution that is both multi-region and multi-zone.
Why B is wrong: Choosing multi-zone without multi-region leaves the workload exposed to a full-region outage; choosing multi-region without multi-zone keeps the in-region SLA capped below 99.99% for VM tiers. The documented mission-critical pattern combines both.