AWS offers a number of messaging and queuing services, each one with its own pros and cons. This post describes each service and when to use it.
Tag: sns
Setting Up Cross-Region Replication of AWS RDS for PostgreSQL
As of today AWS RDS for PostgreSQL1 does not offer cross-region replication. Short of switching to one of the RDS offerings that do support it, there is a few options to consider.
The Dulin Report 