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Copy file name to clipboardExpand all lines: articles/azure-subscription-service-limits.md
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@@ -4,15 +4,16 @@ description: Provides a list of common Azure subscription and service limits, qu
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services: multiple
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author: rothja
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manager: jeffreyg
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tags: billing
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ms.assetid: 60d848f9-ff26-496e-a5ec-ccf92ad7d125
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ms.service: cost-management-billing
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ms.topic: article
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ms.date: 05/30/2019
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ms.date: 11/18/2019
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ms.author: byvinyal
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---
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# Azure subscription and service limits, quotas, and constraints
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This document lists some of the most common Microsoft Azure limits, which are also sometimes called quotas. This document doesn't currently cover all Azure services. Over time, the list will be expanded and updated to cover more services.
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To learn more about Azure pricing, see [Azure pricing overview](https://azure.microsoft.com/pricing/). There, you can estimate your costs by using the [pricing calculator](https://azure.microsoft.com/pricing/calculator/). You also can go to the pricing details page for a particular service, for example, [Windows VMs](https://azure.microsoft.com/pricing/details/virtual-machines/#Windows). For tips to help manage your costs, see [Prevent unexpected costs with Azure billing and cost management](billing/billing-getting-started.md).
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## Limits and Azure Resource Manager
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It's now possible to combine multiple Azure resources into a single Azure resource group. When you use resource groups, limits that once were global become managed at a regional level with Azure Resource Manager. For more information about Azure resource groups, see [Azure Resource Manager overview](azure-resource-manager/resource-group-overview.md).
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In the following list of limits, a new table reflects any differences in limits when you use Azure Resource Manager. For example, there's a **Subscription limits** table and a **Subscription limits - Azure Resource Manager** table. When a limit applies to both scenarios, it's only shown in the first table. Unless otherwise indicated, limits are global across all regions.
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## Service-specific limits
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*[Active Directory](#active-directory-limits)
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*[API Management](#api-management-limits)
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*[App Service](#app-service-limits)
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The following limits apply when you use Azure Resource Manager and Azure resource groups. Limits that haven't changed with Azure Resource Manager aren't listed. See the previous table for those limits.
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For information about Resource Manager API read and write limits, see [Throttling Resource Manager requests](resource-manager-request-limits.md).
The following table details the features and limits of the Basic, Standard, and Premium [service tiers](./container-registry/container-registry-skus.md).
The latest values for Azure Machine Learning Compute quotas can be found in the [Azure Machine Learning quota page](../articles/machine-learning/service/how-to-manage-quotas.md)
For Azure Cosmos DB limits, see [Limits in Azure Cosmos DB](cosmos-db/concepts-limits.md).
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### Azure Database for MySQL
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For Azure Database for MySQL limits, see [Limitations in Azure Database for MySQL](mysql/concepts-limits.md).
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### Azure Database for PostgreSQL
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For Azure Database for PostgreSQL limits, see [Limitations in Azure Database for PostgreSQL](postgresql/concepts-limits.md).
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### Azure Cognitive Search limits
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Pricing tiers determine the capacity and limits of your search service. Tiers include:
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***Free**multitenant service, shared with other Azure subscribers, is intended for evaluation and small development projects.
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***Free**multi-tenant service, shared with other Azure subscribers, is intended for evaluation and small development projects.
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***Basic** provides dedicated computing resources for production workloads at a smaller scale, with up to three replicas for highly available query workloads.
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***Standard**, which includes S1, S2, S3, and S3 High Density, is for larger production workloads. Multiple levels exist within the Standard tier so that you can choose a resource configuration that best matches your workload profile.
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To learn more about limits on a more granular level, such as document size, queries per second, keys, requests, and responses, see [Service limits in Azure Cognitive Search](search/search-limits-quotas-capacity.md).
For SQL Database limits, see [SQL Database resource limits for single databases](sql-database/sql-database-vcore-resource-limits-single-databases.md), [SQL Database resource limits for elastic pools and pooled databases](sql-database/sql-database-vcore-resource-limits-elastic-pools.md), and [SQL Database resource limits for managed instances](sql-database/sql-database-managed-instance-resource-limits.md).
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### SQL Data Warehouse limits
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For SQL Data Warehouse limits, see [SQL Data Warehouse resource limits](sql-data-warehouse/sql-data-warehouse-service-capacity-limits.md).
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## See also
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-[Understand Azure limits and increases](https://azure.microsoft.com/blog/2014/06/04/azure-limits-quotas-increase-requests/)
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-[Virtual machine and cloud service sizes for Azure](virtual-machines/linux/sizes.md?toc=%2fazure%2fvirtual-machines%2flinux%2ftoc.json)
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-[Sizes for Azure Cloud Services](cloud-services/cloud-services-sizes-specs.md)
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*[Understand Azure limits and increases](https://azure.microsoft.com/blog/2014/06/04/azure-limits-quotas-increase-requests/)
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*[Virtual machine and cloud service sizes for Azure](virtual-machines/linux/sizes.md?toc=%2fazure%2fvirtual-machines%2flinux%2ftoc.json)
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*[Sizes for Azure Cloud Services](cloud-services/cloud-services-sizes-specs.md)
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