Query pra fazer o backup do banco e salvar num bucket do S3

aws-backup.sql

exec msdb.dbo.rds_backup_database 
        @source_db_name='DatabaseName', 
        @s3_arn_to_backup_to='arn:Bucket/filenameWithExtension',
        @overwrite_S3_backup_file=1,
        @type='differential';