Amazon S3 to apply a default minimum object size for S3 Lifecycle transition rules

Amazon S3 is beginning to apply a default minimum object size of 128 KB for S3 Lifecycle transition rules to any S3 storage class. This change can help optimize your transition costs for datasets with many kilobyte-sized objects by reducing the number of transition requests. You can override this new default and customize the minimum object size for S3 Lifecycle transition rules to any value.

Using S3 Lifecycle filters, you can create custom rules to transition objects based on prefix, tags, and object sizes. While the object size filter for your existing S3 Lifecycle rules will not automatically change, this new default behavior will be applied to any new or modified S3 Lifecycle configuration.

This change does not impact objects that have already transitioned using S3 Lifecycle. We have started deploying this S3 Lifecycle default to all AWS Regions and deployment will complete in the coming days. To learn more, visit the S3 User Guide.