Version 1.2.1

 Type: AWS::CodeStar::Project Properties:   ProjectName: String   ProjectId: String   ProjectDescription: String   ProjectTemplateId: String   StackId: String

 Type: AWS::CodeStar::SeedRepository Properties:   DefaultBranchName: String   ProjectTemplateId: String   CodeCommitRepositoryURL: String

 Type: AWS::CodeStar::SyncResources Properties:   ProjectId: String

 Type: AWS::Cognito::IdentityPool Properties:   PushSync:     ApplicationArns:       - String     RoleArn: String   CognitoIdentityProviders:     - ServerSideTokenCheck: Boolean       ProviderName: String       ClientId: String   CognitoEvents: Json   DeveloperProviderName: String   CognitoStreams:     StreamingStatus: String     StreamName: String     RoleArn: String   IdentityPoolName: String   AllowUnauthenticatedIdentities: Boolean   SupportedLoginProviders: Json   SamlProviderARNs:     - String   OpenIdConnectProviderARNs:     - String Fn::GetAtt:   Name: String

 Type: AWS::Cognito::IdentityPoolRoleAttachment Properties:   RoleMappings: Json   IdentityPoolId: String   Roles: Json PropertyTypes:   MappingRule:     MatchType: String     Value: String     Claim: String     RoleARN: String   RoleMapping:     Type: String     AmbiguousRoleResolution: String     RulesConfiguration:  # MappingRule: see above   RulesConfigurationType:  # MappingRule: see above

 Type: AWS::Cognito::UserPool Properties:   UserPoolTags: Json   Policies:     PasswordPolicy:       RequireNumbers: Boolean       MinimumLength: Integer       RequireUppercase: Boolean       RequireLowercase: Boolean       RequireSymbols: Boolean   MfaConfiguration: String   Schema:     - DeveloperOnlyAttribute: Boolean       Mutable: Boolean       AttributeDataType: String       StringAttributeConstraints:         MinLength: String         MaxLength: String       Required: Boolean       NumberAttributeConstraints:         MinValue: String         MaxValue: String       Name: String   AdminCreateUserConfig:     InviteMessageTemplate:       EmailMessage: String       SMSMessage: String       EmailSubject: String     UnusedAccountValidityDays: Double     AllowAdminCreateUserOnly: Boolean   SmsAuthenticationMessage: String   UserPoolName: String   SmsVerificationMessage: String   EmailConfiguration:     ReplyToEmailAddress: String     SourceArn: String   SmsConfiguration:     ExternalId: String     SnsCallerArn: String   AliasAttributes:     - String   EmailVerificationSubject: String   LambdaConfig:     CreateAuthChallenge: String     PreAuthentication: String     DefineAuthChallenge: String     PreSignUp: String     PostAuthentication: String     PostConfirmation: String     CustomMessage: String     VerifyAuthChallengeResponse: String   AutoVerifiedAttributes:     - String   DeviceConfiguration:     DeviceOnlyRememberedOnUserPrompt: Boolean     ChallengeRequiredOnNewDevice: Boolean   EmailVerificationMessage: String Fn::GetAtt:   ProviderName: String   ProviderURL: String   Arn: String

 Type: AWS::Cognito::UserPoolClient Properties:   GenerateSecret: Boolean   ClientName: String   UserPoolId: String   ExplicitAuthFlows:     - String   RefreshTokenValidity: Double   ReadAttributes:     - String   WriteAttributes:     - String Fn::GetAtt:   ClientSecret: String   Name: String

 Type: AWS::Cognito::UserPoolGroup Properties:   GroupName: String   Description: String   UserPoolId: String   Precedence: Double   RoleArn: String

 Type: AWS::Cognito::UserPoolUser Properties:   ValidationData:     - Value: String       Name: String   UserPoolId: String   Username: String   MessageAction: String   DesiredDeliveryMediums:     - String   ForceAliasCreation: Boolean   UserAttributes:  # AttributeType: see above

 Type: AWS::Cognito::UserPoolUserToGroupAttachment Properties:   GroupName: String   UserPoolId: String   Username: String

 Type: AWS::AutoScaling::AutoScalingGroup Properties:−removed:   AsTags:−removed:     - Key: String−removed:       PropagateAtLaunch: Boolean−removed:       Value: String   # Update requires: Replacement → No interruption~modified:   LoadBalancerNames:     - String+added:   Tags:+added:     - Key: String+added:       PropagateAtLaunch: Boolean+added:       Value: String

 Type: AWS::AutoScaling::LaunchConfiguration Properties:   BlockDeviceMappings:     - Ebs:~modified:         VolumeSize: String → Integer

 Type: AWS::CloudFront::Distribution Properties:   DistributionConfig:     # Duplicates allowed: Yes → No~modified:     Aliases:       - String     # Duplicates allowed: Yes → No~modified:     CacheBehaviors:       - # Duplicates allowed: Yes → No~modified:         AllowedMethods:           - String         # Duplicates allowed: Yes → No~modified:         CachedMethods:           - String         ForwardedValues:           Cookies:             # Duplicates allowed: Yes → No~modified:             WhitelistedNames:               - String           # Duplicates allowed: Yes → No~modified:           Headers:             - String           # Duplicates allowed: Yes → No~modified:           QueryStringCacheKeys:             - String         # Duplicates allowed: Yes → No~modified:         TrustedSigners:           - String     # Duplicates allowed: Yes → No~modified:     CustomErrorResponses:       - CustomErrorResponse     DefaultCacheBehavior:       # Duplicates allowed: Yes → No~modified:       AllowedMethods:         - String       # Duplicates allowed: Yes → No~modified:       CachedMethods:         - String       ForwardedValues:  # ForwardedValues: see above       # Duplicates allowed: Yes → No~modified:       TrustedSigners:         - String     # Duplicates allowed: Yes → No~modified:     Origins:       - CustomOriginConfig:           # Duplicates allowed: Yes → No~modified:           OriginSSLProtocols:             - String         # Duplicates allowed: Yes → No~modified:         OriginCustomHeaders:           - OriginCustomHeader     Restrictions:       GeoRestriction:         # Duplicates allowed: Yes → No~modified:         Locations:           - String

 Type: AWS::CloudWatch::Alarm Properties:~modified:   EvaluationPeriods: Double → Integer

 Type: AWS::CodeDeploy::Application Properties:   # Update requires: No interruption → Replacement~modified:   ApplicationName: String

 Type: AWS::CodeDeploy::DeploymentConfig Properties:~modified:   MinimumHealthyHosts: String → MinimumHealthyHosts+added:     Type: String+added:     Value: Integer

 Type: AWS::CodeDeploy::DeploymentGroup Properties:   Deployment:~modified:     Revision: Revision → RevisionLocation       S3Location:         # Required: Yes → No~modified:         BundleType: String~modified:   Ec2TagFilters: List of Ec2TagFilter → List of EC2TagFilter     # Required: Yes → No~modified:     Type: String~modified:   OnPremisesInstanceTagFilters: List of OnPremisesInstanceTagFilter → List of TagFilter

 Type: AWS::Config::ConfigRule Properties:   Source:     SourceDetails:+added:       - MaximumExecutionFrequency: String

 Type: AWS::EC2::SecurityGroup Properties:+added:   GroupName: String

 Type: AWS::EC2::VPCPeeringConnection Properties:+added:   PeerOwnerId: String+added:   PeerRoleArn: String

 Type: AWS::ECS::Service Properties:   # Required: Yes → No~modified:   DesiredCount: Integer+added:   PlacementConstraints:+added:     - Expression: String+added:       Type: String+added:   PlacementStrategies:+added:     - Field: String+added:       Type: String+added:   ServiceName: String

 Type: AWS::ECS::TaskDefinition Properties:+added:   PlacementConstraints:+added:     - Expression: String+added:       Type: String

 Type: AWS::EMR::Cluster Properties:+added:   AutoScalingRole: String   Instances:     CoreInstanceGroup:+added:       AutoScalingPolicy:+added:         Constraints:+added:           MaxCapacity: Integer+added:           MinCapacity: Integer+added:         Rules:+added:           - Action:+added:               Market: String+added:               SimpleScalingPolicyConfiguration:+added:                 AdjustmentType: String+added:                 CoolDown: Integer+added:                 ScalingAdjustment: Integer+added:             Description: String+added:             Name: String+added:             Trigger:+added:               CloudWatchAlarmDefinition:+added:                 ComparisonOperator: String+added:                 Dimensions:+added:                   - Key: String+added:                     Value: String+added:                 EvaluationPeriods: Integer+added:                 MetricName: String+added:                 Namespace: String+added:                 Period: Integer+added:                 Statistic: String+added:                 Threshold: Double+added:                 Unit: String     MasterInstanceGroup:  # InstanceGroupConfig: see above

 Type: AWS::IAM::InstanceProfile Properties:+added:   InstanceProfileName: String   # Required: Yes → No~modified:   Path: String

 Type: AWS::IAM::ManagedPolicy Properties:   # Duplicates allowed: Yes → No~modified:   Groups:     - String+added:   ManagedPolicyName: String   # Required: No → Yes   # Update requires: Replacement → No interruption~modified:   PolicyDocument: Json   # Update requires: Replacement → No interruption~modified:   Roles:     - String

 Type: AWS::Lambda::Function Properties:+added:   DeadLetterConfig:+added:     TargetArn: String   # Update requires: Replacement → No interruption~modified:   Runtime: String+added:   Tags:+added:     - Key: String+added:       Value: String

 Type: AWS::OpsWorks::Instance Fn::GetAtt:+added:   AvailabilityZone: String+added:   PrivateDnsName: String+added:   PrivateIp: String+added:   PublicDnsName: String

 Type: AWS::OpsWorks::UserProfile Properties:+added:   SshUsername: String Fn::GetAtt:+added:   SshUsername: String

 Type: AWS::RDS::DBSecurityGroup Properties:   DBSecurityGroupIngress:−removed:     - CDIRIP: String+added:       CIDRIP: String

 Type: AWS::Redshift::Cluster Properties:~modified:   ClusterParameterGroupName: Integer → String+added:   IamRoles:+added:     - String

 Type: AWS::Route53::HealthCheck Properties:   HealthCheckConfig:+added:     AlarmIdentifier:+added:       Name: String+added:       Region: String+added:     ChildHealthChecks:+added:       - String+added:     EnableSNI: Boolean+added:     HealthThreshold: Integer+added:     InsufficientDataHealthStatus: String+added:     Inverted: Boolean+added:     MeasureLatency: Boolean     # Update requires: No interruption → Replacement~modified:     RequestInterval: Integer     # Update requires: No interruption → Replacement~modified:     Type: String

 Type: AWS::Route53::HostedZone Fn::GetAtt:+added:   NameServers:+added:     - String

 Type: AWS::S3::Bucket Fn::GetAtt:+added:   DualStackDomainName: String

 Type: AWS::SQS::Queue Properties:+added:   ContentBasedDeduplication: Boolean+added:   FifoQueue: Boolean