Microsoft Azure Administrator Associate AZ-104 Practice Question

Deploying the virtual machines across availability zones ensures that your application remains available even if an entire Azure datacenter becomes unavailable. Availability zones are physically separate locations within an Azure region, providing isolation from failures in other zones. This configuration also reduces the impact of maintenance and hardware issues, as each zone operates independently.

Using an availability set only protects against host-level failures within the same datacenter and does not safeguard against datacenter outages. A proximity placement group minimizes network latency by placing resources close together but does not enhance availability. Enabling Azure Backup helps with data recovery but does not ensure application uptime during infrastructure failures.