https://gist.github.com/komiya-atsushi/9002471 で生成された CloudFormation テンプレートの JSON ファイルです。

cfn.json

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Resources": {
    "Vpc1": {
      "Type": "AWS::EC2::VPC",
      "Properties": {
        "CidrBlock": "10.0.0.0/16"
      }
    },
    "Subnet1": {
      "Type": "AWS::EC2::Subnet",
      "Properties": {
        "CidrBlock": "10.0.1.0/24",
        "VpcId": {
          "Ref": "Vpc1"
        },
        "AvailabilityZone": "ap-northeast-1a"
      }
    },
    "Subnet2": {
      "Type": "AWS::EC2::Subnet",
      "Properties": {
        "CidrBlock": "10.0.2.0/24",
        "VpcId": {
          "Ref": "Vpc1"
        },
        "AvailabilityZone": "ap-northeast-1c"
      }
    },
    "Subnet3": {
      "Type": "AWS::EC2::Subnet",
      "Properties": {
        "CidrBlock": "10.0.0.0/24",
        "VpcId": {
          "Ref": "Vpc1"
        },
        "AvailabilityZone": "ap-northeast-1a"
      }
    },
    "RouteTable1": {
      "Type": "AWS::EC2::RouteTable",
      "Properties": {
        "VpcId": {
          "Ref": "Vpc1"
        }
      }
    },
    "Igw1": {
      "Type": "AWS::EC2::InternetGateway"
    },
    "Igw1Attachment": {
      "Type": "AWS::EC2::VPCGatewayAttachment",
      "Properties": {
        "InternetGatewayId": {
          "Ref": "Igw1"
        },
        "VpcId": {
          "Ref": "Vpc1"
        }
      }
    },
    "RouteTable1Association0": {
      "Type": "AWS::EC2::SubnetRouteTableAssociation",
      "Properties": {
        "RouteTableId": {
          "Ref": "RouteTable1"
        },
        "SubnetId": {
          "Ref": "Subnet3"
        }
      }
    }
  }
}