Data protection in Amazon S3

You can use live replication to enable automatic, asynchronous copying of objects across Amazon S3 buckets. Buckets that are configured for object replication can be owned by the same AWS account or by different accounts. You can replicate objects to a single destination bucket or to multiple destination buckets. The destination buckets can be in different AWS Regions or within the same Region as the source bucket. To enable failover controls, you can configure replication to be two-way (bidirectional) so that your source and destination buckets can be kept in sync during a Regional failure. For more information, see Replicating objects within and across Regions.

Amazon S3 Multi-Region Access Points provide a global endpoint that applications can use to fulfill requests from S3 buckets that are located in multiple AWS Regions. You can use Multi-Region Access Points to build multi-Region applications with the same architecture that's used in a single Region, and then run those applications anywhere in the world. Instead of sending requests over the congested public internet, Multi-Region Access Points provide built-in network resilience with acceleration of internet-based requests to Amazon S3. Application requests made to a Multi-Region Access Point global endpoint use AWS Global Accelerator to automatically route over the AWS global network to the closest-proximity S3 bucket with an active routing status. For more information about Multi-Region Access Points, see Managing multi-Region traffic with Multi-Region Access Points.

With Amazon S3 Multi-Region Access Point failover controls, you can maintain business continuity during Regional traffic disruptions, while also giving your applications a multi-Region architecture to fulfill compliance and redundancy needs. If your Regional traffic gets disrupted, you can use Multi-Region Access Point failover controls to select which AWS Regions behind an Amazon S3 Multi-Region Access Point will process data-access and storage requests.

To support failover, you can set up your Multi-Region Access Point in an active-passive configuration, with traffic flowing to the active Region during normal conditions, and a passive Region on standby for failover. If you have S3 Cross-Region Replication (CRR) enabled with two-way replication rules, you can keep your buckets synchronized during a failover. For more information about failover controls, see Amazon S3 Multi-Region Access Points failover controls.

Versioning is a means of keeping multiple variants of an object in the same bucket. You can use versioning to preserve, retrieve, and restore every version of every object stored in your Amazon S3 bucket. With versioning, you can easily recover from both unintended user actions and application failures. For more information, see Retaining multiple versions of objects with S3 Versioning.

You can use S3 Object Lock to store objects using a write once, read many (WORM) model. Using S3 Object Lock, you can prevent an object from being deleted or overwritten for a fixed amount of time or indefinitely. S3 Object Lock enables you to meet regulatory requirements that require WORM storage or simply to add an additional layer of protection against object changes and deletion. For more information, see Locking objects with Object Lock.

Amazon S3 is natively integrated with AWS Backup, a fully managed, policy-based service that you can use to centrally define backup policies to protect your data in Amazon S3. After you define your backup policies and assign Amazon S3 resources to the policies, AWS Backup automates the creation of Amazon S3 backups and securely stores the backups in an encrypted backup vault that you designate in your backup plan. For more information, see Backing up your Amazon S3 data.