{
  "Parameters" : {
    "VpcCIDR" : {
      "Description" : "CIDR to be used for the VPC",
      "Type" : "String"
    }
  },
  "Resources" : {
    "MyVPC": {
      "Type" : "AWS::EC2::VPC",
      "Properties" : {
        "CidrBlock" : {"Ref": "VpcCIDR"},
        "Tags" : [
          {"Key": "Name", "Value": "Primary_CF_VPC"}
        ]
      }
    }
  }
}