You will, of course, be connecting to your RDS database via an application of some kind, and when this data is being retrieved, you will want to ensure that the data remains encrypted. Amazon RDS utilizes Secure Sockets Layer/Transport Layer Security (SSL/TLS). Which database engine you are using will depend on the configuration process of each one.
Refer to the following links if you want to understand how to configure and implement in-transit encryption for your database type:
- Microsoft SQL Server database instance: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/SQLServer.Concepts.General.SSL.Using.html
- Oracle Database instance: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Oracle.html#Oracle.Concepts.SSL
- MySQL database instance: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_MySQL.html#MySQL.Concepts.SSLSupport
- MariaDB database instance: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_MariaDB.html...