AWS re:Invent 2025: Amazon S3 Increases the Maximum Object Size to 50TB

Amazon S3 increased the maximum object size to 50TB, a 10x increase from the previous 5TB limit.This simplifies the processing of large objects such as high-resolution videos, seismic data files, AI training datasets and more. You can store 50 B objects in all S3 storage classes and use them with all S3 features.

Optimize upload and download performance for your large objects by using the latest AWS Common Runtime (CRT) and S3 Transfer Manager in the AWS SDK. You can apply S3’s storage management capabilities to these objects. For example, use S3 Lifecycle to automatically archive infrequently accessed objects to S3 Glacier storage classes, or use S3 Replication to copy objects across AWS accounts or Regions.

Amazon S3 supports objects up to 50TB in all AWS Regions. To learn more about working with large objects, visit the S3 User Guide.