CloudFormation / Nested stack example

gistfile1.txt

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "Master template that includes nested templates",
  "Parameters": {
    "DeployBastion": {
        "Description": "Should a bastion server be deployed?",
        "Default": "No",
        "Type": "String",
        "AllowedValues": ["No", "Yes"]
    }
  },
  "Resources": {
    "VPCStack": {
      "Type": "AWS::CloudFormation::Stack",
      "Properties": {
          "TemplateURL": "https://s3-ap-southeast-2.amazonaws.com/<REDACTED>/<REDACTED>.json",
          "TimeoutInMinutes": "5"
      }
    },
    "BastionStack": {
      "Type": "AWS::CloudFormation::Stack",
      "Properties": {
          "TemplateURL": "https://s3-ap-southeast-2.amazonaws.com/<REDACTED>/<REDACTED>.json",
          "Parameters": {
              "VpcId": { "Fn::GetAtt": ["VPCStack", "Outputs.VpcId"] },
              "DeployBastion": { "Ref": "DeployBastion" },
              "SubnetId": { "Fn::GetAtt": ["VPCStack", "Outputs.PublicSubnetA"] }
          }
      }
    }
  }
  "Outputs": {
      "VpcId": {
          "Value": {
              "Fn::GetAtt": ["VPCStack", "Outputs.VpcId"]
          }
      }
  }
}