<ul><li>Azure Availability Zones and Availability Sets are both designed to enhance the reliability and uptime of Azure Virtual Machines.</li><li>Availability Zones are physically separate datacenters within an Azure region, offering fault isolation, replication across zones, logical placement flexibility, high availability, and low latency.</li><li>Availability Sets distribute VMs across fault domains and update domains within a single datacenter, providing fault tolerance, planned maintenance event protection, VM distribution, and a 99.95% uptime SLA.</li><li>Choose Availability Zones for mission-critical applications, regulatory or compliance requirements, and low-latency cross-zone needs. Choose Availability Sets for single-region high-availability applications, cost-sensitive deployments, and single-datacenter resilience.</li></ul>

Azure Availability Zone vs. Availability Set: Making the Right Choice

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