Relational Database Service

What we have shown in the previous section are EC2 machines that can be used to install the required software. There is another service that allows you to administer high availability databases (MySQL, PostgreSQL, Maria DB, and Aurora as well as Oracle and SQL Server) across regions. This service is called RDS and it stands for Relational Database Service.

One of the big headaches with relational databases is the high availability configuration: master-master configuration is something that is usually expensive and out of reach of small companies. AWS has raised the bar with RDS offering multi-region high availability databases with a few clicks.