--- AWSTemplateFormatVersion: "2010-09-09" Description: > Good Template for testing Password Parameters Parameters: MyPassword: Type: String Default: String Description: String NoEcho: True Environment: Type: String Default: "Dev" Resources: MyDB: Type: AWS::RDS::DBInstance Properties: AllocatedStorage: '5' DBInstanceClass: db.m1.small Engine: MySQL MasterUsername: MyName MasterUserPassword: !Ref MyPassword DeletionPolicy: Snapshot myNewDb: Type: AWS::RDS::DBInstance Properties: AllocatedStorage: '5' DBInstanceClass: db.m1.small Engine: MySQL MasterUsername: MyName MasterUserPassword: '{{resolve:ssm-secure:MySecurePassword:1}}' DeletionPolicy: Snapshot myThirdDb: Type: AWS::RDS::DBInstance Properties: AllocatedStorage: '5' DBInstanceClass: db.m1.small Engine: MySQL MasterUsername: MyName MasterUserPassword: 'Prefix-{{resolve:ssm-secure:MySecurePassword:1}}-Postfix' DeletionPolicy: Snapshot MyIAMUser: Type: AWS::IAM::User Properties: UserName: !Sub ${Environment}-{{resolve:ssm:MyUsername:1}} LoginProfile: Password: !Sub 'list-{{resolve:ssm-secure:MySecurePassword:1}}'