Starting today, RDS Custom for SQL Server database instance creation is simplified with single-click creation and attachment of an instance profile. You can choose “Create a new instance profile” and provide an instance profile name for Create database, Restore snapshot, and Restore to Point-in-time options within RDS Management Console. RDS Management Console will automatically generate a new instance profile with all the necessary permissions for RDS Custom automation tasks.
To leverage this feature, you need to ensure that you are logged into AWS Console with the following permissions – iam:CreateInstanceProfile, iam:AddRoleToInstanceProfile, iam:CreateRole, and iam:AttachRolePolicy .
Source:: Amazon AWS