Amazon EMR Serverless now supports encrypting local disks with AWS Key Management Service (KMS) customer managed keys (CMKs). You can now meet strict regulatory and compliance requirements with additional encryption options beyond default AWS-owned keys, giving you greater control over your encryption strategy.

Amazon EMR Serverless is a deployment option in Amazon EMR that makes it simple for data engineers and data scientists to run open-source big data analytics frameworks without configuring, managing, and scaling clusters or servers. Local disks on EMR Serverless workers are encrypted by default using AWS-owned keys. With this launch, customers who have strict regulatory and compliance needs can encrypt local disks with AWS KMS customer managed keys (CMKs) in the same account or from another account. This integration is supported on new or existing EMR Serverless applications and on all supported EMR release versions. You can specify the AWS KMS customer managed key at the application level where it applies to all workloads submitted on the application or you can specify the AWS KMS customer managed key for a specific job run or interactive session.

This feature is available in all supported EMR Releases and in all AWS Regions where Amazon EMR Serverless is available including AWS GovCloud (US) and China regions. To learn more, see Local Disk Encryption with AWS KMS CMK in the Amazon EMR Serverless User Guide.