Amazon S3 Replication adds support for two-way replication
Amazon S3 Replication now gives you the flexibility of replicating object metadata changes for two-way replication between buckets. With this new feature, replica modification sync, you can easily replicate metadata changes like object access control lists (ACLs), object tags, or object locks on the replicated objects. This two-way replication is important if you want to build shared datasets across multiple regions and keep all object and object metadata changes in sync.
You can enable replica modification sync on a new or existing replication rule when replicating bi-directionally between two or more buckets in the same, or different AWS Regions. Similar to all replication rules, you can apply it to the entire S3 bucket or a subset of S3 objects filtered by prefix or object tags. You can monitor replication progress of objects and object metadata on the S3 management console or Amazon CloudWatch by enabling S3 Replication metrics and notifications or S3 Replication Time Control.
You can use the S3 Management Console, SDK, API, or AWS CloudFormation to enable replica modification sync for each replication rule. Replica modification sync is available today in all AWS Regions, including the AWS GovCloud (US) Regions, the AWS China (Beijing) Region, operated by Sinnet, and the AWS China (Ningxia) Region, operated by NWCD. For pricing information, please visit the Amazon S3 pricing page.
To learn more about replica modification sync, please visit the documentation, S3 Replication feature page, or S3 Replication FAQs.