Introducing self-managed Amazon S3 buckets for AWS Lambda function code

Amazon S3 ยท 2026-07-17

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Technical Details

Regions all standard regions
Migration Required Yes
Cost Impact Neutral
IaC Impact High

What This Means

For DevOps Teams

Update your Lambda function deployment process to use self-managed S3 buckets by setting the S3ObjectStorageMode to REFERENCE, ensuring you configure appropriate IAM permissions and S3 bucket policies for secure access.

For Platform Teams

Adopt self-managed S3 buckets for Lambda to simplify artifact management, enforce consistent security and compliance policies, and leverage S3's replication features for enhanced disaster recovery, resulting in reduced operational toil and improved deployment efficiency.

For Executives

Evaluate adopting self-managed S3 buckets for Lambda to reduce storage costs, enhance security control, and improve disaster recovery capabilities, leading to more efficient and compliant function deployments at scale.

Source

View original AWS announcement โ†’

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