We are trying configure Authentication for users to Aurora PostgreSQL. Authenticate to your DB cluster using AWS Identity and Access Management (IAM) database authentication. IAM database authentication works with Aurora PostgreSQL. With this authentication method, don't need to use a password when you connect to a DB cluster. Instead, you use an authentication token.
Reference links - https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/UsingWithRDS.IAMDBAuth.html
Does Toad Edge Support IMA authentication connecting with Aurora postgreSQL ?