Reliability guides by service

Article
02/21/2025

While Azure provides a set of reliability features, the resiliency of your workload is a shared responsibility between you and Microsoft and depends on how you have designed your business continuity plan to define your expectations for reliability. For this reason, it's important that you understand the reliability features of each service you use, and how to best implement them in your workload. This document provides links to the reliability guidance for each Azure service, detailing how each service supports your reliability requirements through its features and design.

Each service guide generally contains information on how the service supports:

Availability zones such as zonal and zone-redundant deployment options, traffic routing and data replication between zones, what happens if a zone experiences an outage, failback, and how to configure your resources for availability zone support.
Multi-region support such as how to configure multi-region or geo-disaster support, traffic routing and data replication between regions, region-down experience, failover and failback support, alternative multi-region support.
Backup support such as who controls backups, where they are stored, how they can be recovered, and whether they are accessible only within a region or across regions.

Note

Some service documents are in the process of, or are not yet updated into a single reliability guide format. These may contain more than one document that references reliability guidance.

AI and machine learning

Product	Guidance
Azure AI Health Insights	Reliability in Azure AI Health Insights
Azure AI Search	Reliability in Azure AI Search
Azure Machine Learning Service	Failover for business continuity and disaster recovery

Analytics

Product	Guidance
Azure Machine Learning Service	Failover for business continuity and disaster recovery
Azure Stream Analytics	Achieve geo-redundancy for Azure Stream Analytics jobs
Azure Event Hubs	Reliability in Azure Event Hubs
Azure Data Explorer	Business continuity and disaster recovery overview
Microsoft Purview	Reliability in Microsoft Purview

Compute

Product	Guidance
Azure App Service	Reliability in Azure App Service
Azure Batch	Reliability in Azure Batch
Azure Container Apps	Reliability in Azure Container Apps
Azure Functions	Reliability in Azure Functions
Azure Kubernetes Service (AKS)	Create an Azure Kubernetes Service (AKS) cluster that uses availability zones High availability and disaster recovery overview for Azure Kubernetes Service (AKS)
Azure Service Fabric	Deploy an Azure Service Fabric cluster across Availability Zones Disaster recovery in Azure Service Fabric
Azure Virtual Machines	Reliability in Azure Virtual Machines
Azure Virtual Machine Image Builder	Reliability in Azure Virtual Machine Image Builder
Azure Virtual Machine Scale Sets	Reliability in Azure Virtual Machine Scale Sets

Containers

Product	Guidance
Azure App Configuration	How does App Configuration ensure high data availability? Resiliency and disaster recovery
Azure Container Apps	Reliability in Azure Container Apps
Azure Container Registry	Enable zone redundancy in Azure Container Registry for resiliency and high availability Geo-replication in Azure Container Registry
Azure Kubernetes Service (AKS)	Create an Azure Kubernetes Service (AKS) cluster that uses availability zones High availability and disaster recovery overview for Azure Kubernetes Service (AKS)
Azure Service Fabric	Deploy an Azure Service Fabric cluster across Availability Zones Disaster recovery in Azure Service Fabric

Databases

Product	Guidance
Azure SQL	Azure SQL - High availability Disaster recovery guidance - Azure SQL Database
Azure SQL-Managed Instance	Failover groups overview & best practices - Azure SQL Managed Instance
Azure Database for MySQL	Overview of business continuity with Azure Database for MySQL - Single Server
Azure Database for MySQL - Flexible Server	Azure Database for MySQL Flexible Server High availability Azure Database for MySQL Flexible Server - Restore to latest restore point
Azure Database for PostgreSQL - Flexible Server	Reliability in Azure Database for PostgreSQL - Flexible Server
Azure Cosmos DB for NoSQL	Reliability in Azure Cosmos DB for NoSQL
Azure Cache for Redis	Enable zone redundancy for Azure Cache for Redis Configure passive geo-replication for Premium Azure Cache for Redis instances

DevOps

Product	Guidance
Azure DevOps	Data availability
Azure Monitor-Log Analytics	Enhance data and service resilience in Azure Monitor Logs with availability zones

Integration

Product	Guidance
Azure Data Factory	Azure Data Factory data redundancy
Azure Functions	Reliability in Azure Functions
Azure Logic Apps	Protect logic apps from region failures with zone redundancy and availability zones Business continuity and disaster recovery for Azure Logic Apps
Azure Service Bus	Best practices for insulating applications against Service Bus outages and disasters

Internet of Things

Product	Guidance
Azure IoT Hub	IoT Hub high availability and disaster recovery

Media

Product	Guidance
Azure Media Services	High Availability with Media Services and Video on Demand (VOD)

Management and governance

Product	Guidance
Azure Backup	Reliability in Azure Backup
Azure Monitor-Log Analytics	Enhance data and service resilience in Azure Monitor Logs with availability zones
Azure Site Recovery	Set up disaster recovery for Azure VMs

Migration

Product	Guidance
Azure Migrate	Does Azure Migrate offer Backup and Disaster Recovery?
Azure Site Recovery	Set up disaster recovery for Azure VMs

Networking

Product	Guidance
Azure Application Gateway (V2)	Autoscaling and High Availability
Azure DNS	Reliability in Azure DNS
Azure ExpressRoute	Designing for high availability with ExpressRoute Designing for disaster recovery with ExpressRoute private peering
Azure Firewall	Deploy an Azure Firewall with Availability Zones using Azure PowerShell
Azure Load Balancer	Reliability in Azure Load Balancer
Azure Network Watcher	Azure Network Watcher service availability and redundancy
Azure Private Link	Azure Private Link availability
Azure Public IP	Azure Public IP Availability Zone
Azure Route Server	Azure Route Server frequently asked questions (FAQ)
Azure Traffic Manager	Reliability in Azure Traffic Manager
Azure Virtual Network	Virtual networks and availability zones Virtual Network - Business Continuity
Azure Virtual WAN	How are Availability Zones and resiliency handled in Virtual WAN? Disaster recovery design
Azure VPN Gateway	About zone-redundant virtual network gateway in Azure availability zones Highly Available cross-premises and VNet-to-VNet connectivity
Azure Web Application Firewall	Deploy an Azure Firewall with Availability Zones using Azure PowerShell How do I achieve a disaster recovery scenario across datacenters by using Application Gateway?

Security

Product	Guidance
Azure Disk Encryption	Redundancy options for managed disks
Azure Firewall	Deploy an Azure Firewall with Availability Zones using Azure PowerShell
Azure Key Vault	Azure Key Vault availability and redundancy
Azure Web Application Firewall	Deploy an Azure Firewall with Availability Zones using Azure PowerShell How do I achieve a disaster recovery scenario across datacenters by using Application Gateway?

Storage

Product	Guidance
Azure Backup	Reliability in Azure Backup
Azure Blob Storage	Choose the right redundancy option Azure storage disaster recovery planning and failover
Azure Databox	How can I recover my data if an entire region fails?
Azure Storage-Disk Storage	Best practices for achieving high availability with Azure virtual machines and managed disks

Web

Product	Guidance
Azure AI Search	Reliability in Azure AI Search
Azure API Management	How to implement disaster recovery using service backup and restore
Azure App Service	Reliability in Azure App Service
Azure Container Apps	Reliability in Azure Container Apps
Azure SignalR Service	Resiliency and disaster recovery in Azure SignalR Service