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--- title: Reliability Guides for Azure Services description: See a list of reliability guides for Azure products and services. Learn about transient fault handling, availability zones, and multi-region support. author: anaharris-ms ms.service: azure ms.topic: reliability-article ms.date: 12/01/2025 ms.author: anaharris ms.custom: subject-reliability ms.subservice: azure-reliability --- # Reliability guides by service This article provides links to reliability guidance for many Azure services. Most reliability guides contain the following information: - *Production deployment recommendations* provide guidance on how to deploy the service to meet your reliability requirements in production environments. - *Resilience to transient faults* describes how the service handles day-to-day transient faults that can occur in the cloud. It also describes how to handle these faults in your application, including information about retry policies, timeouts, and other best practices. - *Reliability architecture overview* is a synopsis of how the service supports reliability. It includes information about which components Microsoft manages and which components you manage, built-in redundancy features, and how to provision and manage multiple resources, if applicable. - *Resilience to availability zone failures* describes how the service supports availability zones, requirements you need to meet to use availability zones, how traffic is routed and data is replicated between zones, what happens when a zone experiences an outage, zone recovery, and how to configure your resources for availability zone support. - *Resilience to region-wide failures* outlines whether the service provides multi-region capabilities, requirements to use those capabilities, how traffic is routed and data is replicated between regions, the region-down experience, failover and failback support, and how to deploy custom multi-region solutions. - *Resilience to service maintenance* describes how the service handles planned maintenance events, including how to minimize downtime and data loss during these events. It also shows you how to configure the service to improve resilience during maintenance times. - *Service-level agreements (SLAs)*, which define and describe the expected uptime, and how the expected uptime changes based on the configuration that you use. - *Backup and recovery* for supported services, including who controls and manages backups, where they're stored and replicated to, how they can be recovered, and whether they're accessible only within a region or across regions. ## Reliability guides by service The following table provides links to reliability guidance for Azure services. Each guide contains information about how the service supports reliability features. > [!NOTE] > Some documents don't follow a single reliability guide format. These services might list more than one article that references reliability guidance. | Service | Reliability guide | Other reliability documentation | |----------|---------|---------| |Azure AI Health Insights| [Reliability in AI Health Insights](reliability-health-insights.md)|| |Azure AI Search| [Reliability in AI Search](reliability-ai-search.md) || |Azure API Center| [Reliability in Azure API Center](reliability-api-center.md) || |Azure API Management | [Reliability in API Management](reliability-api-management.md) || |Azure App Configuration||[App Configuration and high data availability](../azure-app-configuration/faq.yml#how-does-app-configuration-ensure-high-data-availability) </p> [Resiliency and disaster recovery](../azure-app-configuration/concept-disaster-recovery.md)| |Azure App Service| [Reliability in App Service](reliability-app-service.md)|| |App Service Environment| [Reliability in App Service Environment](reliability-app-service-environment.md)|| |Azure Application Gateway for Containers| [Reliability in Application Gateway for Containers](reliability-app-gateway-containers.md ) || |Azure Application Gateway v2||[Autoscaling and high availability](../application-gateway/application-gateway-autoscaling-zone-redundant.md)| |Azure Backup| [Reliability in Backup](reliability-backup.md)|| |Azure Bastion| [Reliability in Azure Bastion](reliability-bastion.md)|| |Azure Batch| [Reliability in Batch](reliability-batch.md)|| |Azure Blob Storage| [Reliability in Blob Storage](reliability-storage-blob.md) || |Azure Bot Service | [Reliability in Bot Service](reliability-bot.md)|| |Azure Cache for Redis||[Enable zone redundancy for Azure Cache for Redis](../azure-cache-for-redis/cache-how-to-zone-redundancy.md) </p> [Configure passive geo-replication for Premium Azure Cache for Redis instances](../azure-cache-for-redis/cache-how-to-geo-replication.md) | |Azure Chaos Studio| [Reliability in Chaos Studio](reliability-chaos-studio.md)|| |Azure Communications Gateway | | [Reliability in Azure Communications Gateway](../communications-gateway/reliability-communications-gateway.md)| |Azure Container Apps| [Reliability in Container Apps](reliability-azure-container-apps.md)|| |Azure Container Instances| [Reliability in Container Instances](reliability-container-instances.md)|| |Azure Container Registry|[Reliability in Container Registry](reliability-container-registry.md) || |Azure Cosmos DB for MongoDB vCore| [Reliability in Azure Cosmos DB for MongoDB vCore](reliability-cosmos-mongodb.md)|| |Azure Cosmos DB for NoSQL| [Reliability in Azure Cosmos DB for NoSQL](reliability-cosmos-db-nosql.md) || |Azure Cosmos DB for PostgreSQL| | [Availability zone outage resiliency in Azure Cosmos DB for PostgreSQL](/azure/cosmos-db/postgresql/concepts-availability-zones) </p> [High availability in Azure Cosmos DB for PostgreSQL](/azure/cosmos-db/postgresql/concepts-high-availability)| |Azure Data Box|| [Recover data if an entire region fails](../databox/data-box-disk-faq.yml#how-can-i-recover-my-data-if-an-entire-region-fails-)| |Azure Data Explorer|| [Business continuity and disaster recovery overview](/azure/data-explorer/business-continuity-overview)| |Azure Data Factory| [Reliability in Data Factory](reliability-data-factory.md)|| |Azure Data Manager for Energy| [Reliability in Azure Data Manager for Energy](reliability-energy-data-services.md)|| |Azure Data Share|| [Disaster recovery for Data Share](../data-share/disaster-recovery.md)| |Azure Database for MySQL|| [High availability concepts in Azure Database for MySQL Flexible Server](/azure/mysql/flexible-server/concepts-high-availability) | |Azure Database for MySQL Flexible Server||[High availability concepts in Azure Database for MySQL Flexible Server](/azure/mysql/flexible-server/concepts-high-availability) </p>[Point-in-time restore in Azure Database for MySQL](/azure/mysql/flexible-server/how-to-restore-server-portal#geo-restores-to-latest-restore-point) | |Azure Database for PostgreSQL| [Reliability in Azure Database for PostgreSQL](reliability-azure-database-postgresql.md)|| |Azure Databricks | [Reliability in Azure Databricks](reliability-databricks.md)|| |Azure DDoS Protection| [Reliability in DDoS Protection](reliability-ddos.md)|| |Azure Deployment Environments| [Reliability in Deployment Environments](reliability-deployment-environments.md)|| |Azure Device Registry |[Reliability in Device Registry](reliability-device-registry.md)|| |Azure DevOps|| [Data protection overview](/azure/devops/organizations/security/data-protection#data-availability)| |Azure Disk Encryption|| [Redundancy options for managed disks](/azure/virtual-machines/disks-redundancy) | |Azure DNS| [Reliability in Azure DNS ](reliability-dns.md)|| |Azure Elastic SAN| [Reliability in Elastic SAN](reliability-elastic-san.md)|| |Azure Event Grid| [Reliability in Event Grid](./reliability-event-grid.md)|| |Azure Event Hubs| [Reliability in Azure Event Hubs](./reliability-event-hubs.md) || |Azure ExpressRoute| [Reliability in Azure ExpressRoute](reliability-virtual-network-gateway.md?pivot=expressroute) || |Azure Files| [Reliability in Azure Files](reliability-storage-files.md)|| |Azure Firewall| [Reliability in Azure Firewall](./reliability-firewall.md) || |Azure Functions| [Reliability in Azure Functions ](reliability-functions.md)|| |Azure guest configuration||[Azure guest configuration availability](../governance/machine-configuration/overview.md#availability) | |Azure Health Data Services||[Disaster recovery for Health Data Services](../healthcare-apis/azure-api-for-fhir/disaster-recovery.md) | |Azure Health Data Services: De-identification service|[Reliability in the Health Data Services de-identification service](reliability-health-data-services-deidentification.md)|| |Azure Health Data Services: Workspace services (FHIR®, DICOM®, medtech) | | [Business continuity and disaster recovery considerations](/azure/healthcare-apis/business-continuity-disaster-recovery) | |Azure HDInsight| [Reliability in HDInsight](reliability-hdinsight.md)|| |Azure IoT Hub| [Reliability in IoT Hub](reliability-iot-hub.md) || |Azure Key Vault| [Reliability in Key Vault](./reliability-key-vault.md) || |Azure Kubernetes Service (AKS)| [Reliability in AKS](reliability-aks.md)|| |Azure Load Balancer| [Reliability in Load Balancer](reliability-load-balancer.md )|| |Azure Logic Apps|[Reliability in Logic Apps](reliability-logic-apps.md) || |Azure Machine Learning|| [Failover for business continuity and disaster recovery](/azure/machine-learning/how-to-high-availability-machine-learning)| |Azure managed disks|| [Best practices for achieving high availability by using Azure virtual machines and managed disks](/azure/virtual-machines/disks-high-availability)| |Azure Media Services|| [High availability by using Media Services and video on demand (VOD)](/azure/media-services/latest/architecture-high-availability-encoding-concept)| |Azure Migrate | | [Azure Migrate and backup and disaster recovery](../migrate/resources-faq.md#does-azure-migrate-offer-backup-and-disaster-recovery)| |Azure Monitor Logs | | [Enhance data and service resilience in Azure Monitor Logs by using availability zones](/azure/azure-monitor/logs/availability-zones) </p> [Azure Monitor Logs workspace replication](/azure/azure-monitor/logs/workspace-replication) | |Azure NetApp Files|| [Reliability in Azure NetApp Files](reliability-netapp-files.md)| |Azure Network Watcher|| [Network Watcher service availability and redundancy](../network-watcher/frequently-asked-questions.yml#service-availability-and-redundancy)| |Azure Notification Hubs| [Reliability in Notification Hubs](reliability-notification-hubs.md)|| |Azure Private Link|| [Private Link availability](../private-link/availability.md) | |Azure public IP addresses|| [Azure public IP addresses availability zone](../virtual-network/ip-services/public-ip-addresses.md#availability-zone) | |Azure Queue Storage|[Reliability in Queue Storage](reliability-storage-queue.md)|| |Azure Route Server|| [Route Server frequently asked questions (FAQs)](../route-server/route-server-faq.md)| |Azure Service Bus|[Reliability in Service Bus](reliability-service-bus.md)|| |Azure Service Fabric|| [Deploy a Service Fabric cluster across availability zones](/azure/service-fabric/service-fabric-cross-availability-zones) </p> [Disaster recovery in Service Fabric](/azure/service-fabric/service-fabric-disaster-recovery) | |Azure SignalR Service|| [Resiliency and disaster recovery in Azure SignalR Service](../azure-signalr/signalr-concept-disaster-recovery.md)| |Azure Site Recovery|| [Set up disaster recovery for Azure virtual machines](../site-recovery/azure-to-azure-tutorial-enable-replication.md)| |Azure SQL Database|[Reliability in Azure SQL Database](reliability-sql-database.md) | |Azure SQL Managed Instance| [Reliability in Azure SQL Managed Instance](./reliability-sql-managed-instance.md) || |Azure Storage Actions| [Reliability in Storage Actions](reliability-storage-actions.md)|| |Azure Storage Mover| [Reliability in Storage Mover](reliability-azure-storage-mover.md)|| |Azure Stream Analytics|| [Achieve geo-redundancy for Stream Analytics jobs](../stream-analytics/geo-redundancy.md) | |Azure Table Storage| [Reliability in Table Storage](reliability-storage-table.md)|| |Azure Traffic Manager| [Reliability in Traffic Manager](reliability-traffic-manager.md)|| |Azure Virtual Machines| [Reliability in Virtual Machines](reliability-virtual-machines.md)|| |Azure VM Image Builder| [Reliability in VM Image Builder](reliability-image-builder.md)|| |Azure Virtual Machine Scale Sets| [Reliability in Virtual Machine Scale Sets](reliability-virtual-machine-scale-sets.md)|| |Azure Virtual Network| [Reliability in Virtual Network](reliability-virtual-network.md) || |Azure Virtual WAN||[Availability zones and resiliency in Virtual WAN](../virtual-wan/virtual-wan-faq.md#how-are-availability-zones-and-resiliency-handled-in-virtual-wan)</p> [Disaster recovery design](/azure/virtual-wan/disaster-recovery-design) | |Azure VMware Solution|| [Deploy disaster recovery by using VMware HCX](../azure-vmware/deploy-disaster-recovery-using-vmware-hcx.md)| |Azure VPN Gateway| [Reliability in VPN Gateway](reliability-virtual-network-gateway.md?pivot=vpn) || |Azure Web Application Firewall| | [Deploy Azure Firewall with availability zones by using Azure PowerShell](../firewall/deploy-availability-zone-powershell.md) </p> [Achieve a disaster recovery scenario across datacenters by using Application Gateway](../application-gateway/application-gateway-faq.yml#how-do-i-achieve-a-disaster-recovery-scenario-across-datacenters-by-using-application-gateway)| |Community Training| [Reliability in Community Training](reliability-community-training.md) || |Microsoft Fabric| [Reliability in Fabric](reliability-fabric.md)|| |Microsoft Purview| [Reliability in Microsoft Purview](reliability-microsoft-purview.md)|| ## Related content - [Azure services that support availability zones](availability-zones-service-support.md) - [List of Azure regions](regions-list.md) - [Build solutions for high availability by using availability zones](/azure/well-architected/reliability/regions-availability-zones)