AWS S3 Cross Region Replication

AWS S3 Cross Region Replication

You must enable versioning a the bucket level to use the Cross Region Replication feature.
Pros:

  • Easy to setup
  • Enhances high availability of S3 objects
  • Faster access for end users in the regions replicated to
  • Mitigates S3 hotspots
  • Extra S3 storage charges are cheap usually depending on volume

Cons:

  • You pay for the extra S3 storage
  • Must enable versioning – which may cost more – nice feature though

Other features:
For example, you can configure cross-region replication to replicate only objects with the key name prefix BasketballTeams/.
S3 will then replicate objects with a keys like BasketballTeams/Sacramento or BasketballTeams/GoldenState, but not an object with the key HockeyTeams/Detroit.
S3 encrypts all data in transit across AWS Regions using Secure Sockets Layer (SSL).
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