AWS – Amazon RDS for MariaDB now supports IAM Authentication

Amazon Relational Database Service (Amazon RDS) now enables you to use AWS Identity and Access Management (IAM) to manage database access for Amazon RDS for MariaDB instances. Database administrators can now associate database users with IAM users and roles. By using IAM, you can manage user access to AWS resources from a single location, avoiding issues caused by permissions that are out of sync on different AWS resources.

Read More for the details.