Does Microsoft Azure have an SLA?

Yes. Microsoft Azure publishes SLAs for 5 of the 5 services on file here, up to 99.995% for Azure SQL Database.

What is Microsoft Azure's uptime guarantee?

Azure Blob Storage (Storage Accounts): 99.99% (Hot / Transaction Optimized, RA-GRS and RA-GZRS read requests); Azure Functions: 99.95% (Consumption plan); Azure OpenAI in Foundry Models: 99.9% (Foundry Models (Sold by Azure), availability); Azure SQL Database: 99.995% (General Purpose / Business Critical / Premium / Hyperscale, Zone Redundant); Azure Virtual Machines: 99.99% (Availability Zones)

Microsoft Azure SLA

Cloud · 5 of 5 services with an SLA · up to 99.995% · checked 24h ago

Official SLA Compare

Services

ServicePromisedFirst creditObserved 365dDowntime

Azure Blob Storage (Storage Accounts)Storage · Hot / Transaction Optimized, RA-GRS and RA-GZRS read requests99.99%First credit10%Observed 365dNo feedAll incidents 100%
Azure FunctionsCompute · Consumption plan99.95%First credit10%Observed 365dNo feedAll incidents 100%
Azure OpenAI in Foundry ModelsAI models · Foundry Models (Sold by Azure), availability99.9%First credit10%Observed 365dNo feedAll incidents 100%
Azure SQL DatabaseDatabases · General Purpose / Business Critical / Premium / Hyperscale, Zone Redundant99.995%First credit10%Observed 365dNo feedAll incidents 100%
Azure Virtual MachinesCompute · Availability Zones99.99%First credit10%Observed 365dNo feedAll incidents 100%

Latest incidents

Status page

Azure publishes post-incident reviews as web pages only, with no machine-readable history, so observed uptime is not computed.

Support response times

Plans

PlanFastestFirst response targets

BasicIncluded for all Azure customersn/aNo published response targets.
Developer$29 per monthn/aMinimal business impact (Sev C): Within eight business hours
Standard$100 per month1 hCritical 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$1,000 per month1 hCritical 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 Enterprise15 minCritical 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

SLA changes

DateServiceChangeSource

May 1, 2018Azure 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
Mar 15, 2017Azure 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
Jan 1, 2017Azure 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).

Promise vs reality

ServiceDowntime vs allowed

Promised in the SLAObserved on the vendor's status pagePartial historyShortfall

Status history: Azure publishes post-incident reviews as web pages only, with no machine-readable history, so observed uptime is not computed.
Weighted uptime: All incidents, weighted: 100% · Downtime
Status page: azure.status.microsoft/en-us/status/history/
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