AWS Key Management Service
Developer Guide

Limits

To make AWS KMS responsive and performant for all users, AWS KMS applies two types of limits. Each limit is calculated independently for each Region of each AWS account.

Important

If you need to exceed these limits, you can request a limit increase in Service Quotas. Use the Service Quotas console or the RequestServiceQuotaIncrease operation. For details, see Requesting a Quota Increase in the Service Quotas User Guide. If Service Quotas for AWS KMS are not available in the AWS Region, please visit the AWS Support Center and create a case.

  • Resource limits: Limit the number of each type of AWS KMS resource.

  • Rate limits: Limit the number of requests for AWS KMS API operations in each second.