Crear un VPC y 2 subnet, una publica y una privada con parametros

VPC-CIDR-parametros.json

{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description" : "Crear un VPC y 2 subnet, una publica y una privada",

  "Parameters" : {
    "AZ" : {
    "Type" : "String",
    "Default" : "us-east-1a",
    "AllowedValues" : ["us-east-1a", "us-east-1c", "us-east-1d", "us-east-1e"],
    "Description" : "Especificar Availability Zone."
    },
    "CIDRVPC" : {
    "Type" : "String",
    "Description" : "Especificar CIDR para la VPC (ej. 10.0.0.0/16)"
    },
    "CIDRPublicSubnet" : {
      "Type" : "String",
      "Description" : "Especificar CIDR para la Subnet Publica (ej. 10.0.0.0/16)"
    },
    "CIDRPrivateSubnet" : {
      "Type" : "String",
      "Description" : "Especificar CIDR para la Subnet Privada (ej. 10.0.0.0/16)"
    }
  },

  "Resources" : {

    "VPC" : {
      "Type" : "AWS::EC2::VPC",
      "Properties" : {
        "EnableDnsSupport" : "true",
        "EnableDnsHostnames" : "true",
        "CidrBlock" : { "Ref" : "CIDRVPC" },
        "Tags" : [
          { "Key" : "Name", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Public" }
        ]
      }
    },

    "PublicSubnet" : {
      "Type" : "AWS::EC2::Subnet",
      "Properties" : {
        "AvailabilityZone" : { "Ref" : "AZ" },
        "VpcId" : { "Ref" : "VPC" },
        "CidrBlock" : { "Ref" : "CIDRPublicSubnet" },
        "Tags" : [
          { "Key" : "Network", "Value" : "Public" },
          { "Key" : "Name", "Value" : "public-subnet" }
        ]
      }
    },

    "PrivateSubnet" : {
      "Type" : "AWS::EC2::Subnet",
      "Properties" : {
        "AvailabilityZone" : { "Ref" : "AZ" },
        "VpcId" : { "Ref" : "VPC" },
        "CidrBlock" : { "Ref" : "CIDRPrivateSubnet" },
        "Tags" : [
          { "Key" : "Network", "Value" : "Private" },
          { "Key" : "Name", "Value" : "private-subnet" }
        ]
      }
    },

    "InternetGateway" : {
      "Type" : "AWS::EC2::InternetGateway"
       },

    "GatewayToInternet" : {
       "Type" : "AWS::EC2::VPCGatewayAttachment",
       "Properties" : {
         "VpcId" : { "Ref" : "VPC" },
         "InternetGatewayId" : { "Ref" : "InternetGateway" }
       }
    },

    "PublicRouteTable" : {
      "Type" : "AWS::EC2::RouteTable",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" }
      }
    },

    "PublicRoute" : {
      "Type" : "AWS::EC2::Route",
      "DependsOn" : "GatewayToInternet",
      "Properties" : {
        "RouteTableId" : { "Ref" : "PublicRouteTable" },
        "DestinationCidrBlock" : "0.0.0.0/0",
        "GatewayId" : { "Ref" : "InternetGateway" }
      }
    },

    "PublicSubnetRouteTableAssociation" : {
      "Type" : "AWS::EC2::SubnetRouteTableAssociation",
      "Properties" : {
        "SubnetId" : { "Ref" : "PublicSubnet" },
        "RouteTableId" : { "Ref" : "PublicRouteTable" }
      }
    }
  }
}