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An organization is deploying a mission-critical web application on Microsoft Azure. To protect against localized physical disruptions—such as a facility power loss or cooling system failure affecting an entire datacenter—the architecture team wants to distribute virtual machines across physically separate datacenters located within the same geographic region.
Which Azure infrastructure component should the organization implement to meet this requirement?
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Availability Zones are physically separate locations within an Azure region. Each zone is comprised of one or more datacenters equipped with independent power, cooling, and networking infrastructure. They are interconnected by high-performance, low-latency private networks.
By deploying virtual machines across multiple Availability Zones, the application is protected from datacenter-wide failures. If an unexpected power outage, cooling malfunction, or local hardware failure renders an entire datacenter offline, instances in other zones within the region continue running without interruption.
Availability Zones offer the ideal balance of high fault isolation and minimal network latency without requiring multi-region deployment complexity.
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