VPCStack:
    Type: 'AWS::CloudFormation::Stack'
    Properties:
      TemplateURL:
        !Sub
          - https://${S3Bucket}.s3.${S3Region}.${AWS::URLSuffix}/${QSS3KeyPrefix}submodules/quickstart-aws-vpc/templates/aws-vpc.template
          - S3Region: !If [UsingDefaultBucket, !Ref 'AWS::Region', !Ref QSS3BucketRegion]
            S3Bucket: !If [UsingDefaultBucket, !Sub '${QSS3BucketName}-${AWS::Region}', !Ref QSS3BucketName]
      Parameters:
        AvailabilityZones: !Join 
          - ','
          - !Ref AvailabilityZones
        KeyPairName: !Ref KeyPairName
        NumberOfAZs: '2'
        PrivateSubnet1ACIDR: !Ref PrivateSubnet1CIDR
        PrivateSubnet2ACIDR: !Ref PrivateSubnet2CIDR
        PublicSubnet1CIDR: !Ref PublicSubnet1CIDR
        PublicSubnet2CIDR: !Ref PublicSubnet2CIDR
        VPCCIDR: !Ref VPCCIDR