Azure Spot Virtual Machines Preview
Scalable compute capacity at deep discounts
Buy unused compute capacity at deep discounts
Pay up to the price you agree to in advance
Run interruptible workloads at scale on VMs and VMSS
Get more cloud at a lower cost
With Azure Spot Virtual Machines (Spot VMs), you’ll be able to access unused Azure compute capacity at deep discounts—up to 90 percent compared to pay-as-you-go prices.* You pay up to the maximum price that you optionally agree to in advance.* Spot VMs are ideal for workloads that can be interrupted, providing scalability while reducing costs. You get unique Azure pricing and benefits when running Windows Server workloads on Spot VMs.
* The maximum discounts will be available when variable pricing becomes effective. Actual discounts may vary based on region, VM type, and Azure compute capacity available when the workload is deployed.
Select VM or VM scale sets
Get Spot VM pricing for Azure VMs or VM scale sets (VMSS). Select the right deployment model based on your preferences and the characteristics of your application.
Spot VM prices will change as necessary and will vary based on available capacity. Workloads will be evicted when:
- The current price is higher than the maximum price that you agree to pay.**
- Azure no longer has available compute capacity and needs to reallocate its resources.
** Workload eviction is based on the maximum price that you optionally set and will become available when variable pricing becomes effective.
Run recommended workloads
Like their low-priority VMs predecessors, on Spot VMs, run only workloads that can handle interruptions and don’t need to be completed within a specific timeframe. Spot VMs are ideal for the following types of workloads:
- High-performance computing scenarios, batch processing jobs, or visual rendering applications.
- Dev/test environments, including continuous integration and continuous delivery workloads.
- Large-scale stateless applications.
Frequently asked questions about Spot pricing
The preview of Azure low-priority VMs on scale sets has been discontinued and will be retired after January 1, 2020. Spot VMs—now in preview—have replaced Azure low-priority VMs and will include new capabilities, such as variable pricing. Spot pricing is also available on both single VMs and VMSS. Variable pricing will become effective at a future date.
Spot VMs are now in Preview on VMs and VMSS to customers buying from the web or through a Microsoft representative. As we learn from our customers in Preview, we will continue to expand the availability through other programs.
Workloads are evicted when Azure no longer has available compute capacity and must reallocate its resources.
Workloads will also be evicted when the current price exceeds the maximum price that you agreed to pay before the VMs were allocated. Workload eviction based on the maximum price that you set—will become available when variable pricing becomes effective.
Additionally, when you subscribe to scheduled events, you get a notification 30 seconds before your workload is evicted. Refer to the documentation for more information.
For pricing transparency across all Azure regions and to ensure fairness when allocating available compute capacity, all our customers will enter maximum prices in US dollars. You may pay your Azure bill in one of the supported local currencies below.AUDAustralian dollarTWDTaiwan dollarGBPBritish poundCADCanadian dollarCNYChinese yuanDKKDanish kroneEUREuroINRIndian rupeeJPYJapanese yenKRWKorean wonNZDNew Zealand dollarNOKNorwegian kroneRUBRussian rubleSEKSwedish kronaCHFSwiss franc
If you’re running a single Spot VM, the VM is deallocated, and no additional VM-related charges are incurred after deallocation. However, other resources (such as disk or network) continue to run and accrue charges.
If you’re running Spot VMs on VMSS, it depends on the eviction policy that you select. If the eviction policy is set to Deallocate, only the VM is deallocated, and no VM-associated charges are incurred. However, other resources (such as disk or network) continue to run and accrue charges. Conversely, if the eviction policy is set to Delete, the VM and all associated resources are deleted.
For Spot VMs on VMSS, if the eviction policy is set to Deallocate, any data stored on disk storage is not deleted. However, all the temporary data that is local to the VM is deleted. Single Spot VMs are always deallocated.If the eviction policy is set to Delete, data that’s stored on local disks and on any attached persistent disk storage is deleted. This option isn’t available on single VMs.
There is no guaranteed minimum run time for a Spot VM. Allocation is based on available unused capacity.
If the eviction policy is set to Deallocate, you manually restart the VM either in the Azure portal or by using a command-line interface such as Azure PowerShell. Depending on the available Azure capacity, the VM may be reallocated. Single Spot VMs are always deallocated by Azure.
Spot pricing is available across most Azure VMs, except for suppressed core VMs, Promo VMs, and burstable VMs (B-series).
Yes. The difference is that Spot VMs give you a new purchasing option to buy unused Azure compute capacity (VMs) at deep discounts compared to pay-as-you-go prices. Unlike pay-as-you-go pricing, a service-level agreement (SLA) isn’t available for Spot VMs. See the product terms for more information.
Run workloads that can be interrupted and that don’t have to be completed within a specific amount of time.
No. You can only set the Spot pricing flag at creation time.
No. An Azure VMSS can’t support more than one type of VM.
Spot VMs have a separate quota pool like pay-as-you-go VMs. Learn more in the Azure subscription and service limits, quotas, and constraints documentation.
Yes. Use the standard quota increase process—the same that you use for pay-as-you-go VMs—to submit a request to increase your quota for Spot VMs. Learn more in the Azure subscription and service limits, quotas, and constraints documentation.
To review Azure Spot VMs availability across the various Azure channels - including Cloud Service Providers (CSPs) - please refer to our documentation. Please visit Partner Center and contact your Microsoft partner account manager if you have any additional questions.
Batch currently supports low-priority VMs and will be updated to support Spot VMs, including the ability to set the maximum price. Spot VMs will only be supported for ‘virtualMachineConfiguration’ pools and not ‘cloudServiceConfiguration’ pools. Learn more about Spot VMs on Batch.