Azure services that support availability zones

Azure regions and availability zones are physically separate locations within each Azure region that are tolerant to datacenter failures because of redundant infrastructure and logical isolation of Azure services.

Azure services that support availability zones are designed to provide the right level of resiliency and flexibility along with ultra-low latency. With Azure services that support availability zones, whether you architect your own resiliency or opt for automatic replication and distribution, the benefit is the same. You get superior resiliency across highly available services, no matter the service type.

Azure strives to enable high resiliency across every service and offering. Running Azure services that support availability zones provides fully transparent and consistent resiliency against nearly all scenarios, without interruption.

Azure regions with availability zones

Azure provides the most extensive global footprint of any cloud provider and is rapidly opening new regions and availability zones. Azure has availability zones in every country in which Azure operates a datacenter region. The following regions currently support availability zones.

Americas Europe Middle East Africa Asia Pacific
Brazil South France Central Qatar Central South Africa North Australia East
Canada Central Germany West Central UAE North Central India
Central US North Europe Japan East
East US Norway East Korea Central
East US 2 UK South Southeast Asia
South Central US West Europe East Asia
US Gov Virginia Sweden Central China North 3
West US 2 Switzerland North
West US 3

For a list of Azure services that support availability zones by Azure region, see the availability zones documentation.

Highly available services

Three types of Azure services support availability zones: zonal, zone-redundant, and always-available services. You can combine all three of these approaches to architecture when you design your resiliency strategy.

  • Zonal services: A resource can be deployed to a specific, self-selected availability zone to achieve more stringent latency or performance requirements. Resiliency is self-architected by replicating applications and data to one or more zones within the region. Resources can be pinned to a specific zone. For example, virtual machines, managed disks, or standard IP addresses can be pinned to a specific zone, which allows for increased resiliency by having one or more instances of resources spread across zones.
  • Zone-redundant services: Resources are replicated or distributed across zones automatically. For example, zone-redundant services replicate the data across three zones so that a failure in one zone doesn't affect the high availability of the data. 
  • Always-available services: Always available across all Azure geographies and are resilient to zone-wide outages and region-wide outages. For a complete list of always-available services, also called non-regional services, in Azure, see Products available by region.

Azure offerings are grouped into three categories that reflect their regional availability: foundational, mainstream, and strategic services. Azure's general policy on deploying services into any given region is primarily driven by region type, service category, and customer demand. For more information, see Azure services.

  • Foundational services: Available in all recommended and alternate regions when a region is generally available, or within 90 days of a new foundational service becoming generally available.
  • Mainstream services: Available in all recommended regions within 90 days of a region's general availability. Mainstream services are demand-driven in alternate regions, and many are already deployed into a large subset of alternate regions.
  • Strategic services: Targeted service offerings, often industry-focused or backed by customized hardware. Strategic services are demand-driven for availability across regions, and many are already deployed into a large subset of recommended regions.

Azure services that support availability zones, including zonal and zone-redundant offerings, are continually expanding.

For more information on older-generation virtual machines, see Previous generations of virtual machine sizes.

The following tables provide a summary of the current offering of zonal, zone-redundant, and always-available Azure services. They list Azure offerings according to the regional availability of each.

Legend

Legend containing icons and meaning of each with respect to service category and regional availability of each service in the table.

In the Product Catalog, always-available services are listed as "non-regional" services.

An icon that signifies this service is foundational. Foundational services

Products Resiliency
Azure Application Gateway (V2) An icon that signifies this service is zone redundant. An icon that signifies this service is zonal.
Azure Backup An icon that signifies this service is zonal.
Azure Cosmos DB An icon that signifies this service is zone redundant.
Azure DNS: Azure DNS Private Zones An icon that signifies this service is zone redundant.
Azure DNS: Azure DNS Private Resolver An icon that signifies this service is zone redundant.
Azure ExpressRoute An icon that signifies this service is zone redundant.
Azure Public IP An icon that signifies this service is zone redundant. An icon that signifies this service is zonal.
Azure Site Recovery An icon that signifies this service is zonal
Azure SQL An icon that signifies this service is zone redundant.
Azure Event Hubs An icon that signifies this service is zone redundant.
Azure Key Vault An icon that signifies this service is zone redundant.
Azure Load Balancer An icon that signifies this service is zone redundant. An icon that signifies this service is zonal
Azure Service Bus An icon that signifies this service is zone redundant.
Azure Service Fabric An icon that signifies this service is zone redundant. An icon that signifies this service is zonal
Azure Storage account An icon that signifies this service is zone redundant.
Azure Storage: Azure Data Lake Storage An icon that signifies this service is zone redundant.
Azure Storage: Disk Storage An icon that signifies this service is zone redundant.
Azure Storage: Blob Storage An icon that signifies this service is zone redundant.
Azure Storage: Managed Disks An icon that signifies this service is zone redundant. An icon that signifies this service is zonal
Azure Virtual Machine Scale Sets An icon that signifies this service is zone redundant. An icon that signifies this service is zonal.
Azure Virtual Machines An icon that signifies this service is zonal.
Virtual Machines: Av2-Series An icon that signifies this service is zonal.
Virtual Machines: Bs-Series An icon that signifies this service is zonal.
Virtual Machines: DSv2-Series An icon that signifies this service is zonal.
Virtual Machines: DSv3-Series An icon that signifies this service is zonal.
Virtual Machines: Dv2-Series An icon that signifies this service is zonal.
Virtual Machines: Dv3-Series An icon that signifies this service is zonal.
Virtual Machines: ESv3-Series An icon that signifies this service is zonal.
Virtual Machines: Ev3-Series An icon that signifies this service is zonal.
Virtual Machines: F-Series An icon that signifies this service is zonal.
Virtual Machines: FS-Series An icon that signifies this service is zonal.
Virtual Machines: Azure Compute Gallery An icon that signifies this service is zone redundant.
Azure Virtual Network An icon that signifies this service is zone redundant.
Azure VPN Gateway An icon that signifies this service is zone redundant.

*VMs that support availability zones: AV2-series, B-series, DSv2-series, DSv3-series, Dv2-series, Dv3-series, ESv3-series, Ev3-series, F-series, FS-series, FSv2-series, and M-series.*

An icon that signifies this service is mainstream. Mainstream services

Products Resiliency
Azure Active Directory Domain Services An icon that signifies this service is zone redundant.
Azure API Management An icon that signifies this service is zone redundant.
Azure App Configuration An icon that signifies this service is zone redundant.
Azure App Service An icon that signifies this service is zone redundant.
Azure App Service: App Service Environment An icon that signifies this service is zone redundant. An icon that signifies this service is zonal
Azure Bastion An icon that signifies this service is zone redundant.
Azure Batch An icon that signifies this service is zone redundant.
Azure Cache for Redis An icon that signifies this service is zone redundant. An icon that signifies this service is zonal
Azure Cognitive Search An icon that signifies this service is zone redundant.
Azure Container Instances An icon that signifies this service is zonal
Azure Container Registry An icon that signifies this service is zone redundant.
Azure Data Explorer An icon that signifies this service is zone redundant.
Azure Data Factory An icon that signifies this service is zone redundant.
Azure Database for MySQL – Flexible Server An icon that signifies this service is zone redundant.
Azure Database for PostgreSQL – Flexible Server An icon that signifies this service is zone redundant.
Azure DDoS Protection An icon that signifies this service is zone redundant.
Azure Disk Encryption An icon that signifies this service is zone redundant.
Azure Event Grid An icon that signifies this service is zone-redundant
Azure Firewall An icon that signifies this service is zone redundant.
Azure Firewall Manager An icon that signifies this service is zone redundant.
Azure Functions An icon that signifies this service is zone redundant.
Azure HDInsight An icon that signifies this service is zonal
Azure IoT Hub An icon that signifies this service is zone redundant.
Azure Kubernetes Service (AKS) An icon that signifies this service is zone redundant. An icon that signifies this service is zonal
Azure Logic Apps An icon that signifies this service is zone redundant.
Azure Monitor An icon that signifies this service is zone redundant.
Azure Monitor: Application Insights An icon that signifies this service is zone redundant.
Azure Monitor: Log Analytics An icon that signifies this service is zone redundant.
Azure Network Watcher An icon that signifies this service is zone redundant.
Azure Network Watcher: Traffic Analytics An icon that signifies this service is zone redundant.
Azure Notification Hubs An icon that signifies this service is zone redundant.
Azure Private Link An icon that signifies this service is zone redundant.
Azure Route Server An icon that signifies this service is zone redundant.
Azure Stream Analytics An icon that signifies this service is zone redundant.
SQL Server on Azure Virtual Machines An icon that signifies this service is zone redundant.
Azure Storage: Files Storage An icon that signifies this service is zone redundant.
Azure Virtual WAN An icon that signifies this service is zone redundant.
Azure Web Application Firewall An icon that signifies this service is zone redundant.
Power BI Embedded An icon that signifies this service is zone redundant.
Virtual Machines: Azure Dedicated Host An icon that signifies this service is zonal.
Virtual Machines: Ddsv4-Series An icon that signifies this service is zonal.
Virtual Machines: Ddv4-Series An icon that signifies this service is zonal.
Virtual Machines: Dsv4-Series An icon that signifies this service is zonal.
Virtual Machines: Dv4-Series An icon that signifies this service is zonal.
Virtual Machines: Edsv4-Series An icon that signifies this service is zonal.
Virtual Machines: Edv4-Series An icon that signifies this service is zonal.
Virtual Machines: Esv4-Series An icon that signifies this service is zonal.
Virtual Machines: Ev4-Series An icon that signifies this service is zonal.
Virtual Machines: Fsv2-Series An icon that signifies this service is zonal.
Virtual Machines: M-Series An icon that signifies this service is zonal.
Virtual WAN: Azure ExpressRoute An icon that signifies this service is zone redundant.
Virtual WAN: Point-to-site VPN Gateway An icon that signifies this service is zone redundant.
Virtual WAN: Site-to-site VPN Gateway An icon that signifies this service is zone redundant.

An icon that signifies this service is strategic. Strategic services

Products Resiliency
Azure HPC Cache An icon that signifies this service is zonal.
Azure IoT Hub Device Provisioning Service An icon that signifies this service is zone redundant.
Azure Red Hat OpenShift An icon that signifies this service is zone redundant. An icon that signifies this service is zonal
Azure Managed Instance for Apache Cassandra An icon that signifies this service is zone redundant.
Azure Storage: Ultra Disk An icon that signifies this service is zonal.

An icon that signifies this service is non-regional. Non-regional services (always-available services)

Products Resiliency
Azure Active Directory An icon that signifies this service is always available.
Microsoft Defender for Identity An icon that signifies this service is always available.
Azure Advisor An icon that signifies this service is always available.
Azure Blueprints An icon that signifies this service is always available.
Azure Bot Services An icon that signifies this service is always available.
Azure Cloud Shell An icon that signifies this service is always available.
Azure Content Delivery Network An icon that signifies this service is always available.
Azure Cost Management and Billing An icon that signifies this service is always available.
Microsoft Defender for IoT An icon that signifies this service is always available.
Azure DNS An icon that signifies this service is always available.
Azure Front Door An icon that signifies this service is always available.
Azure Information Protection An icon that signifies this service is always available.
Azure Lighthouse An icon that signifies this service is always available.
Azure Managed Applications An icon that signifies this service is always available.
Azure Maps An icon that signifies this service is always available.
Azure Peering Service An icon that signifies this service is always available.
Azure Performance Diagnostics An icon that signifies this service is always available.
Azure Policy An icon that signifies this service is always available.
Azure portal An icon that signifies this service is always available.
Azure Resource Graph An icon that signifies this service is always available.
Azure Stack Edge An icon that signifies this service is always available.
Azure Traffic Manager An icon that signifies this service is always available.
Customer Lockbox for Microsoft Azure An icon that signifies this service is always available.
Microsoft Defender for Cloud An icon that signifies this service is always available.
Microsoft Graph An icon that signifies this service is always available.
Microsoft Intune An icon that signifies this service is always available.
Microsoft Sentinel An icon that signifies this service is always available.

For a list of Azure services that support availability zones by Azure region, see the availability zones documentation.

Pricing for virtual machines in availability zones

You can access Azure availability zones by using your Azure subscription. To learn more, see Bandwidth pricing.

Next steps