# Quotas for Security Hub
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Your Amazon Web Services account has certain default quotas, formerly referred to as *limits*, for each Amazon Web Services service. These quotas are the maximum number of service resources or operations for your account. This topic links to the quotas that apply to Amazon Security Hub resources and operations for your account. Unless otherwise noted, each quota applies to your account in each Amazon Web Services Region.

Some quotas can be increased, while others cannot. To request an increase to a quota, use the [Service Quotas console](https://console.amazonaws.cn/servicequotas/home). To learn how to request an increase, see [Requesting a quota increase](https://docs.amazonaws.cn/servicequotas/latest/userguide/request-quota-increase.html) in the *Service Quotas User Guide*. If a quota isn't available on the Service Quotas console, use the [service limit increase form](https://console.amazonaws.cn/support/home#/case/create?issueType=service-limit-increase) on the Amazon Support Center Console to request an increase to the quota.

## Maximum quotas
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For a list of quotas that apply to Amazon Security Hub resources, see [Amazon Security Hub endpoints and quotas](https://docs.amazonaws.cn/general/latest/gr/sechub.html) in the *Amazon Web Services General Reference*.

## Rate quotas
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For a list of quotas that apply to Amazon Security Hub API operations, see the [Amazon Security Hub API Reference](https://docs.amazonaws.cn/securityhub/1.0/APIReference/Welcome.html).

If you set up [cross-Region aggregation in Security Hub CSPM](finding-aggregation.md), one call to `BatchImportFindings` and `BatchUpdateFindings` impacts linked Regions and the aggregation Region. The `GetFindings` operation retrieves findings from linked Regions and the aggregation Region. However, the `BatchEnableStandards` and `UpdateStandardsControl` operations are Region-specific.