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Unlocking data residency use cases with Amazon S3 in AWS Local Zones

Storage Blog

This article explains how Amazon S3 directory buckets in AWS Local Zones enable compliant data residency storage for regulated industries without building local infrastructure.

  • S3 directory buckets store data in single Local Zones using S3 One Zone-IA storage class with precise geographic control
  • Available in Istanbul, Hanoi, and Athens Local Zones with plans for expansion to additional locations
  • Directory buckets use hierarchical object storage with separate regional (control plane) and zonal (data plane) endpoints
  • Migrate data from parent Region using S3 Batch Operations, aws s3 cp, or CopyObject API
  • Upload on-premises data via aws s3 cp or PutObject API with TLS encryption and AWS Direct Connect connectivity
  • Bucket naming format includes zone ID suffix: base-name--zone-id--x-s3
  • Unlocks dependent services like EBS local snapshots and Amazon EMR local processing within the same geographic boundary

S3 directory buckets provide a managed, single-zone storage solution for workloads requiring strict data residency compliance while maintaining operational consistency with AWS Regions.

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