21) A company wants to migrate an existing on-premises web application to AWS. The existing technology stacks consist of configuration files, application code that connects to a MySQL database by using a language-specific MySQL API, and a source code repository that holds configuration files and program code. A developer uses an Amazon RDS for MySQL DB instance as the target database. The developer uses a container as the compute engine for the web application program code. The developer wants to configure the database connection from the web application code to the new RDS for MySQL DB instance without refactoring the existing code The developer also must maximize security for the storage of the database username and password pair that the application code uses. Which combination of steps should the developer take to meet these requirements? (Select TWO )
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