Posted On: Mar 28, 2019

AWS Key Management Service (KMS) has increased the limits for a set of KMS resources, including Customer Master Keys (CMKs), Aliases, and Grants per CMK. The limits have been increased from 1,000 to 10,000 for customer-managed CMKs, from 1,100 to 10,000 for Aliases, and from 2,500 to 10,000 for Grants per CMK in all regions where KMS is available. These limit increases make it easier for you to scale your KMS operations.

The higher limits will be reflected in your accounts automatically, and there is no further action required on your end. Customers with approved limits that are higher than the new limits will continue to have access to those higher limits. To learn more about KMS limits, visit our documentation. To see all the regions where KMS is available, see the AWS region table.