Oracle RDS GoldenGate support

Oracle GoldenGate can be used with Amazon RDS for Oracle for active-active database replication, zero-downtime migration and upgrades, disaster recovery and data protection, and cross region replication. 

More information here: http://aws.amazon.com/about-aws/whats-new/2014/04/03/you-can-now-use-oracle-goldengate-with-amazon-rds-for-oracle/

RDS cross region snapshots

Great news for AWS RDS users looking to provide extra DR protection to their SQL Server, Oracle and MySQL databases: http://aws.amazon.com/about-aws/whats-new/2013/10/31/announcing-point-and-click-copy-of-amazon-rds-db-snapshots-across-aws-regions/

DynamoDB cross region support

DynamoDB does currently not support cross-region replication. Therefore, were you to store your data in two (or more) regions, you would have to roll out your own implementation to replicate.

SNS cross region support

SNS is available in all AWS regions.  It is possible to publish SNS topics and one region and have subscribers in another region.

Cross region AWS Services

There are a few AWS services that are cross region:

• IAM
• Cloud Front
• Route 53