Availability zone service and regional support
Azure availability zones are physically separate locations within each Azure region. This article shows you which regions and services support availability zones.
For more information on availability zones and regions, see What are Azure regions and availability zones?,
Azure regions with availability zone support
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 China/region in which Azure operates a datacenter region.
Important
Some services may have limited support for availability zones. For example, some may only support availability zones for certain tiers, regions, or SKUs. To get more information on service limitations for availability zone support, select that service listed in the Azure services with availability zone support section of this document.
The following regions currently support availability zones:
| Asia Pacific |
|---|
| China North 3 |
Azure services with availability zone support
Azure services that support availability zones, including zonal and zone-redundant offerings, are continually expanding.
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 reliability 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 are aligned to a selected zone. For example, virtual machines, managed disks, or standard IP addresses can be aligned to a same zone, which allows for increased resiliency by having multiple instances of resources deployed to different zones.
Zone-redundant services: Resources are replicated or distributed across zones automatically. For example, zone-redundant services replicate the data across multiple 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.
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.
Important
To learn more about availability zones support and available services in your region, contact your Azure sales or customer representative.
Legend
In the Product Catalog, always-available services are listed as "non-regional" services.
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
Important
Some services, although they are zone-redundant, may have limited support for availability zones. For example, some may only support availability zones for certain tiers, regions, or SKUs. To get more information on service limitations for availability zone support, select that service in the following table.
Foundational services
| Products | Resiliency |
|---|---|
| Azure Cosmos DB for NoSQL |
|
| Azure DNS: Azure DNS Private Zones |
|
| Azure DNS: Azure DNS Private Resolver |
|
| Azure ExpressRoute |
|
| Azure Public IP |
|
| Azure Site Recovery |
|
| Azure SQL Database |
|
| Azure SQL Managed Instance |
|
| Azure Event Hubs |
|
| Azure Key Vault |
|
| Azure Load Balancer |
|
| Azure Service Bus |
|
| Azure Service Fabric |
|
| Azure Storage account |
|
| Azure Storage: Azure Data Lake Storage |
|
| Azure Storage: Disk Storage |
|
| Azure Storage: Blob Storage |
|
| Azure Storage: Managed Disks |
|
| Azure Virtual Machine Scale Sets |
|
| Azure Virtual Machines |
|
| Virtual Machines: Av2-Series |
|
| Virtual Machines: Bs-Series |
|
| Virtual Machines: DSv2-Series |
|
| Virtual Machines: DSv3-Series |
|
| Virtual Machines: Dv2-Series |
|
| Virtual Machines: Dv3-Series |
|
| Virtual Machines: ESv3-Series |
|
| Virtual Machines: Ev3-Series |
|
| Virtual Machines: F-Series |
|
| Virtual Machines: FS-Series |
|
| Virtual Machines: Azure Compute Gallery |
|
| Azure Virtual Network |
|
| Azure VPN Gateway |
|
*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.*
Mainstream services
Strategic services
| Products | Resiliency |
|---|---|
| Azure Automation |
|
| Azure HPC Cache |
|
| Azure IoT Hub Device Provisioning Service |
|
| Azure SignalR |
|
| Azure Web PubSub |
|
Non-regional services (always-available services)
| Products | Resiliency |
|---|---|
| Microsoft Entra ID |
|
| Microsoft Defender for Identity |
|
| Azure Advisor |
|
| Azure Bot Services |
|
| Azure Content Delivery Network |
|
| Azure Cost Management |
|
| Microsoft Defender for IoT |
|
| Azure DNS |
|
| Azure Information Protection |
|
| Azure Lighthouse |
|
| Azure Managed Applications |
|
| Azure Peering Service |
|
| Azure Policy |
|
| Azure portal |
|
| Azure Resource Graph |
|
| Azure Stack Edge |
|
| Azure Traffic Manager |
|
| Microsoft Defender for Cloud |
|
| Microsoft Graph |
|
| Microsoft Intune |
|
| Microsoft Sentinel |
|
Pricing for virtual machines in availability zones
You can access Azure availability zones by using your Azure subscription. To learn more, see Bandwidth pricing.