They only launched support for within-region read replicas back in November > https://aws.amazon.com/blogs/aws/rds-postgres-read-replicas/ https://aws.amazon.co

They only launched support for within-region read replicas back in November > https://aws.amazon.com/blogs/aws/rds-postgres-read-replicas/ https://aws.amazon.com/blogs/aws/rds-postgres-read-replicas/ Postgres is still comparatively new to AWS, whereas MySQL was one of the first (the first?) supported RDS engines way back in 2008/9 or thereabouts. I guess this is due in part to the relative latecoming of built-in streaming replication support in Postgres, it's only been since 9.0 that it's been a thing, and 9.1 that it's been production-ready, which coincides with it's rise in popularity over recent years (well, that and Oracle buying Sun..). My money is on support for x-region replication being announced late this year; it's a feature I'm interested in for sure.