MapMySite is setting up a web application in the AWS VPC. The organization has decided to use an AWS RDS instead of using its own DB instance for HA andDR requi...

MapMySite is setting up a web application in the AWS VPC. The organization has decided to use an AWS RDS instead of using its own DB instance for HA andDR requirements.
The organization also wants to secure RDS access.
How should the web application be setup with RDS?