One of the questions that came up during my discussion with our data center admins was durability and availability of an RDS instance. I knew about Multi-AZ Read Replicas but Cross-Region was new to me.
With Amazon Relational Database Service (Amazon RDS), you can create a MySQL, PostgreSQL, or MariaDB Read Replica in a different AWS Region than the source DB instance. You create a Read Replica to do the following:
- Improve your disaster recovery capabilities.
- Scale read operations into a region closer to your users.
- Make it easier to migrate from a data center in one region to a data center in another region.