Azure Availability Zones

Availability Zones are physically separate datacenter locations within an Azure region. They provide independent power, cooling, and networking so you can design high availability workloads with minimal latency.

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Regions with zones36
VM SLA across zones99.99%
Typical zone latency< 2 ms

Azure regions with Availability Zone support

Deploy your resources across zones within a region to achieve higher resiliency without significantly increasing latency.

Additional resources

Use these references to plan resilient architectures with Availability Zones.

Availability Zones overview

Understand the design goals, resiliency model, and supported services for Availability Zones.

Regional support

Review which regions currently provide zone support and how Microsoft is expanding coverage.

Service zone support

Check the list of Azure services that are zonal or zone-redundant in each supported region.

Frequently asked questions

How can I verify service support for a region?
Microsoft publishes service availability for each region. Visit the Azure products by region page to confirm support for your workloads.
Do Availability Zones add latency?
Availability Zones are designed to maintain low-latency connections within a region. Azure keeps zones physically separate yet close enough to support synchronous replication.
What resiliency options use zones?
Many Azure services support zonal or zone-redundant deployments. Review service-specific documentation to understand how zones improve availability and recovery objectives.