A developer is managing three AWS accounts, each with an Amazon RDS DB instance in a private subnet. The task is to consistently define and update the same set of users across all three databases. What is the most operationally efficient solution for this requirement?

Exam-Like

Utilize an AWS CloudFormation template to declare and attach users to the database, then deploy the template across all accounts.

33.3%

Employ a CloudFormation template with a custom resource for user creation within the database, deploying this template in each account.

50.0%

Develop a script for user creation and execute it on Amazon EC2 instances in each account, targeting the respective databases.

8.3%

Use an AWS Lambda function configured with access to all three accounts to create the necessary users in the databases.

8.3%

AWS Certified Developer - Associate