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Enhance savings for read-heavy workloads with Amazon S3 Bucket Keys

Storage Blog

This article discusses how Amazon S3 Bucket Keys can help reduce costs for AWS Key Management Service (AWS KMS) requests, especially for read-heavy workloads. It highlights a recent enhancement that allows IAM assume role sessions from the same IAM role and matching scoped down policy to share a bucket-level key, resulting in greater savings on AWS KMS request costs.

Specifically, the article covers:

  • An overview of Amazon S3 Bucket Keys and how they reduce KMS request costs
  • The new enhancement for read-heavy workloads using temporary credentials like AWS STS AssumeRole actions
  • Cost savings improvements observed by the Amazon S3 team and customer testimonials
  • Conclusion emphasizing the benefits of using S3 Bucket Keys for compliance requirements while reducing KMS costs
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