Microsoft Azure SLACloud vendor · Uptime guarantee, credits and support
Promise vs reality
Azure publishes post-incident reviews as web pages only, with no machine-readable history, so observed uptime is not computed.
All incidents, weighted: 100% · Downtime- Services with an SLA
- 5/5
- Highest SLA
- 99.995%
- Lowest observed, 365d
- n/a
- Fastest support
- 15 min
Services and tiers
- Azure Blob Storage (Storage Accounts)Storage · measured other · SLA of Sep 1, 2026
- Hot / Transaction Optimized, LRS/ZRS/GRS/GZRS (reads and writes), RA-GRS/RA-GZRS writesStorage accounts in the Hot access tier99.9%credit 10% to 25%
- Hot / Transaction Optimized, RA-GRS and RA-GZRS read requestsRead requests to read-access geo-redundant accounts (with retry against the secondary region)99.99%credit 10% to 25%
- Cool / Cold / Archive, write requests (all redundancy types)Storage in the Cool, Cold and Archive access tiers99%credit 10% to 25%
- Azure FunctionsCompute · measured other · SLA of Sep 1, 2026
- Consumption planFunction Apps on the Consumption plan99.95%credit 10% to 100%
- Flex Consumption, Premium or Dedicated App Service planFunction Apps on Flex Consumption, Premium or Dedicated App Service plans99.95%credit 10% to 100%
- Azure OpenAI in Foundry ModelsAI models · measured other · SLA of Sep 1, 2026
- Foundry Models (Sold by Azure), availabilityFoundry Models Sold by Azure (including Azure OpenAI models); Developer tier not covered99.9%credit 10% to 25%
- Provisioned Managed Deployments and Priority Processing, latencyLatency attainment (Tokens Per Second vs. SLA Latency Target Value) for models with a documented latency target99%credit 10% to 10%
- Azure SQL DatabaseDatabases · measured other · SLA of Sep 1, 2026
- General Purpose / Business Critical / Premium / Hyperscale, Zone RedundantDatabases configured for Zone Redundant Deployments99.995%credit 10% to 100%
- Hyperscale / Business Critical / Premium / General Purpose, not zone redundantDatabases not configured for Zone Redundant Deployments99.99%credit 10% to 100%
- Basic / StandardBasic or Standard tier databases99.99%credit 10% to 100%
- Azure Virtual MachinesCompute · measured other · SLA of Sep 1, 2026
- Availability ZonesTwo or more VMs deployed across two or more Availability Zones in the same region99.99%credit 10% to 100%
- Availability Set / Dedicated Host GroupTwo or more VMs in the same Availability Set or same Dedicated Host Group (not Availability Sets using Azure shared disks)99.95%credit 10% to 100%
- Single-Instance VM, Premium SSD / Premium SSD v2 / Ultra DiskSingle VM with Premium SSD for all OS disks and Premium SSD, Premium SSD v2 or Ultra Disk for all data disks99.9%credit 10% to 100%
- Single-Instance VM, Standard SSD Managed DiskSingle VM whose lowest disk type is Standard SSD99.5%credit 10% to 100%
- Single-Instance VM, Standard HDD Managed DiskSingle VM whose lowest disk type is Standard HDD95%credit 10% to 100%
Support response times
PlansFastest first response by plan
- BasicIncluded for all Azure customersn/a
- Developer$29 per monthn/a
- Standard$100 per month1 h
- Professional Direct$1,000 per month1 h
- Unified Enterprise15 min
- BasicNo published response targets.
- Developer
- Minimal business impact (Sev C)Within eight business hours
- Standard
- Critical business impact (Sev A)Within one hour
- Moderate business impact (Sev B)Within four hours
- Minimal business impact (Sev C)Within eight business hours
- Professional Direct
- Critical business impact (Sev A)Within one hour
- Moderate business impact (Sev B)Within two hours
- Minimal business impact (Sev C)Within four business hours
- Unified Enterprise
- Critical business system down (Sev 1)Within 15 mins for Azure, one hour for all other products
- Critical business impact (Sev A)Within one hour
- Moderate business impact (Sev B)Within two hours
- Minimal business impact (Sev C)Within four business hours
Latest incidents
Status pageSLA changes
- May1Azure Virtual MachinesAvailability Zones tier added: VMs across two or more zones get 99.99% (10/25/100% credits). Not present in the March 2018 edition.Source
- Mar15Azure Virtual Machines100% credit tier added below 95% for Availability Set and single-instance VMs. January 2017 edition: Availability Set < 99.95% 10%, < 99% 25% (no 100% tier); March 15, 2017 edition adds '< 95% 100%'.Source
- Jan1Azure Virtual MachinesSingle-instance VM SLA of 99.9% (premium storage for all disks) first appears. December 2016 edition covered only VMs in an Availability Set (99.95%, credits 10% / 25%).Source
About Microsoft Azure
All Azure SLA figures come from the consolidated 'Service Level Agreement for Microsoft Online Services' September 1, 2026 English WW edition (docx downloaded from the licensing page on 2026-09-23). Unified Enterprise pricing is not published ('See pricing details'). Sev C targets are in business hours, so minutes are null. Change history comes from Microsoft's own archived monthly SLA editions on the same licensing page. The Standard SSD / Standard HDD single-instance tiers are not dated: the late-2020 to 2021 editions sampled did not carry the Azure VM section, so the date they were introduced could not be pinned down.
Microsoft Corporation is an American multinational technology company headquartered in Redmond, Washington. Source
Highest commitment: Azure SQL Database, 99.995% (General Purpose / Business Critical / Premium / Hyperscale, Zone Redundant).
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