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

  "Description" : "AWS CloudFormation Sample Template VPC_Single_Instance_In_Subnet: Sample template showing how to create a VPC and add an EC2 instance with an Elastic IP address and a security group. **WARNING** This template creates an Amazon EC2 instance. You will be billed for the AWS resources used if you create a stack from this template.",

  "Parameters" : {

    "InstanceType" : {
      "Description" : "WebServer EC2 instance type",
      "Type" : "String",
      "Default" : "t2.small",
      "AllowedValues" : [ "t1.micro", "t2.nano", "t2.micro", "t2.small", "t2.medium", "t2.large", "m1.small", "m1.medium", "m1.large", "m1.xlarge", "m2.xlarge", "m2.2xlarge", "m2.4xlarge", "m3.medium", "m3.large", "m3.xlarge", "m3.2xlarge", "m4.large", "m4.xlarge", "m4.2xlarge", "m4.4xlarge", "m4.10xlarge", "c1.medium", "c1.xlarge", "c3.large", "c3.xlarge", "c3.2xlarge", "c3.4xlarge", "c3.8xlarge", "c4.large", "c4.xlarge", "c4.2xlarge", "c4.4xlarge", "c4.8xlarge", "g2.2xlarge", "g2.8xlarge", "r3.large", "r3.xlarge", "r3.2xlarge", "r3.4xlarge", "r3.8xlarge", "i2.xlarge", "i2.2xlarge", "i2.4xlarge", "i2.8xlarge", "d2.xlarge", "d2.2xlarge", "d2.4xlarge", "d2.8xlarge", "hi1.4xlarge", "hs1.8xlarge", "cr1.8xlarge", "cc2.8xlarge", "cg1.4xlarge"]
,
      "ConstraintDescription" : "must be a valid EC2 instance type."
    },

    "KeyName": {
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instance",
      "Type": "AWS::EC2::KeyPair::KeyName",
      "ConstraintDescription" : "must be the name of an existing EC2 KeyPair."
    },
    
    "SSHLocation" : {
      "Description" : " The IP address range that can be used to SSH to the EC2 instances",
      "Type": "String",
      "MinLength": "9",
      "MaxLength": "18",
      "Default": "0.0.0.0/0",
      "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
      "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
    }
  },

  "Mappings" : {
    "Region2Examples" : {
      "us-east-1"      : { "Examples" : "https://s3.amazonaws.com/cloudformation-examples-us-east-1" },
      "us-west-2"      : { "Examples" : "https://s3-us-west-2.amazonaws.com/cloudformation-examples-us-west-2" },
      "us-west-1"      : { "Examples" : "https://s3-us-west-1.amazonaws.com/cloudformation-examples-us-west-1" },
      "eu-west-1"      : { "Examples" : "https://s3-eu-west-1.amazonaws.com/cloudformation-examples-eu-west-1" },
      "eu-west-2"      : { "Examples" : "https://s3-eu-west-2.amazonaws.com/cloudformation-examples-eu-west-2" },
      "eu-central-1"   : { "Examples" : "https://s3-eu-central-1.amazonaws.com/cloudformation-examples-eu-central-1" },
      "ap-southeast-1" : { "Examples" : "https://s3-ap-southeast-1.amazonaws.com/cloudformation-examples-ap-southeast-1" },
      "ap-northeast-1" : { "Examples" : "https://s3-ap-northeast-1.amazonaws.com/cloudformation-examples-ap-northeast-1" },
      "ap-northeast-2" : { "Examples" : "https://s3-ap-northeast-2.amazonaws.com/cloudformation-examples-ap-northeast-2" },
      "ap-southeast-2" : { "Examples" : "https://s3-ap-southeast-2.amazonaws.com/cloudformation-examples-ap-southeast-2" },
      "ap-south-1"     : { "Examples" : "https://s3-ap-south-1.amazonaws.com/cloudformation-examples-ap-south-1" },
      "us-east-2"      : { "Examples" : "https://s3-us-east-2.amazonaws.com/cloudformation-examples-us-east-2" },
      "ca-central-1"   : { "Examples" : "https://s3-ca-central-1.amazonaws.com/cloudformation-examples-ca-central-1" },
      "sa-east-1"      : { "Examples" : "https://s3-sa-east-1.amazonaws.com/cloudformation-examples-sa-east-1" },
      "cn-north-1"     : { "Examples" : "https://s3.cn-north-1.amazonaws.com.cn/cloudformation-examples-cn-north-1" }
    }
,
    "AWSInstanceType2Arch" : {
      "t1.micro"    : { "Arch" : "PV64"   },
      "t2.nano"     : { "Arch" : "HVM64"  },
      "t2.micro"    : { "Arch" : "HVM64"  },
      "t2.small"    : { "Arch" : "HVM64"  },
      "t2.medium"   : { "Arch" : "HVM64"  },
      "t2.large"    : { "Arch" : "HVM64"  },
      "m1.small"    : { "Arch" : "PV64"   },
      "m1.medium"   : { "Arch" : "PV64"   },
      "m1.large"    : { "Arch" : "PV64"   },
      "m1.xlarge"   : { "Arch" : "PV64"   },
      "m2.xlarge"   : { "Arch" : "PV64"   },
      "m2.2xlarge"  : { "Arch" : "PV64"   },
      "m2.4xlarge"  : { "Arch" : "PV64"   },
      "m3.medium"   : { "Arch" : "HVM64"  },
      "m3.large"    : { "Arch" : "HVM64"  },
      "m3.xlarge"   : { "Arch" : "HVM64"  },
      "m3.2xlarge"  : { "Arch" : "HVM64"  },
      "m4.large"    : { "Arch" : "HVM64"  },
      "m4.xlarge"   : { "Arch" : "HVM64"  },
      "m4.2xlarge"  : { "Arch" : "HVM64"  },
      "m4.4xlarge"  : { "Arch" : "HVM64"  },
      "m4.10xlarge" : { "Arch" : "HVM64"  },
      "c1.medium"   : { "Arch" : "PV64"   },
      "c1.xlarge"   : { "Arch" : "PV64"   },
      "c3.large"    : { "Arch" : "HVM64"  },
      "c3.xlarge"   : { "Arch" : "HVM64"  },
      "c3.2xlarge"  : { "Arch" : "HVM64"  },
      "c3.4xlarge"  : { "Arch" : "HVM64"  },
      "c3.8xlarge"  : { "Arch" : "HVM64"  },
      "c4.large"    : { "Arch" : "HVM64"  },
      "c4.xlarge"   : { "Arch" : "HVM64"  },
      "c4.2xlarge"  : { "Arch" : "HVM64"  },
      "c4.4xlarge"  : { "Arch" : "HVM64"  },
      "c4.8xlarge"  : { "Arch" : "HVM64"  },
      "g2.2xlarge"  : { "Arch" : "HVMG2"  },
      "g2.8xlarge"  : { "Arch" : "HVMG2"  },
      "r3.large"    : { "Arch" : "HVM64"  },
      "r3.xlarge"   : { "Arch" : "HVM64"  },
      "r3.2xlarge"  : { "Arch" : "HVM64"  },
      "r3.4xlarge"  : { "Arch" : "HVM64"  },
      "r3.8xlarge"  : { "Arch" : "HVM64"  },
      "i2.xlarge"   : { "Arch" : "HVM64"  },
      "i2.2xlarge"  : { "Arch" : "HVM64"  },
      "i2.4xlarge"  : { "Arch" : "HVM64"  },
      "i2.8xlarge"  : { "Arch" : "HVM64"  },
      "d2.xlarge"   : { "Arch" : "HVM64"  },
      "d2.2xlarge"  : { "Arch" : "HVM64"  },
      "d2.4xlarge"  : { "Arch" : "HVM64"  },
      "d2.8xlarge"  : { "Arch" : "HVM64"  },
      "hi1.4xlarge" : { "Arch" : "HVM64"  },
      "hs1.8xlarge" : { "Arch" : "HVM64"  },
      "cr1.8xlarge" : { "Arch" : "HVM64"  },
      "cc2.8xlarge" : { "Arch" : "HVM64"  }
    },

    "AWSInstanceType2NATArch" : {
      "t1.micro"    : { "Arch" : "NATPV64"   },
      "t2.nano"     : { "Arch" : "NATHVM64"  },
      "t2.micro"    : { "Arch" : "NATHVM64"  },
      "t2.small"    : { "Arch" : "NATHVM64"  },
      "t2.medium"   : { "Arch" : "NATHVM64"  },
      "t2.large"    : { "Arch" : "NATHVM64"  },
      "m1.small"    : { "Arch" : "NATPV64"   },
      "m1.medium"   : { "Arch" : "NATPV64"   },
      "m1.large"    : { "Arch" : "NATPV64"   },
      "m1.xlarge"   : { "Arch" : "NATPV64"   },
      "m2.xlarge"   : { "Arch" : "NATPV64"   },
      "m2.2xlarge"  : { "Arch" : "NATPV64"   },
      "m2.4xlarge"  : { "Arch" : "NATPV64"   },
      "m3.medium"   : { "Arch" : "NATHVM64"  },
      "m3.large"    : { "Arch" : "NATHVM64"  },
      "m3.xlarge"   : { "Arch" : "NATHVM64"  },
      "m3.2xlarge"  : { "Arch" : "NATHVM64"  },
      "m4.large"    : { "Arch" : "NATHVM64"  },
      "m4.xlarge"   : { "Arch" : "NATHVM64"  },
      "m4.2xlarge"  : { "Arch" : "NATHVM64"  },
      "m4.4xlarge"  : { "Arch" : "NATHVM64"  },
      "m4.10xlarge" : { "Arch" : "NATHVM64"  },
      "c1.medium"   : { "Arch" : "NATPV64"   },
      "c1.xlarge"   : { "Arch" : "NATPV64"   },
      "c3.large"    : { "Arch" : "NATHVM64"  },
      "c3.xlarge"   : { "Arch" : "NATHVM64"  },
      "c3.2xlarge"  : { "Arch" : "NATHVM64"  },
      "c3.4xlarge"  : { "Arch" : "NATHVM64"  },
      "c3.8xlarge"  : { "Arch" : "NATHVM64"  },
      "c4.large"    : { "Arch" : "NATHVM64"  },
      "c4.xlarge"   : { "Arch" : "NATHVM64"  },
      "c4.2xlarge"  : { "Arch" : "NATHVM64"  },
      "c4.4xlarge"  : { "Arch" : "NATHVM64"  },
      "c4.8xlarge"  : { "Arch" : "NATHVM64"  },
      "g2.2xlarge"  : { "Arch" : "NATHVMG2"  },
      "g2.8xlarge"  : { "Arch" : "NATHVMG2"  },
      "r3.large"    : { "Arch" : "NATHVM64"  },
      "r3.xlarge"   : { "Arch" : "NATHVM64"  },
      "r3.2xlarge"  : { "Arch" : "NATHVM64"  },
      "r3.4xlarge"  : { "Arch" : "NATHVM64"  },
      "r3.8xlarge"  : { "Arch" : "NATHVM64"  },
      "i2.xlarge"   : { "Arch" : "NATHVM64"  },
      "i2.2xlarge"  : { "Arch" : "NATHVM64"  },
      "i2.4xlarge"  : { "Arch" : "NATHVM64"  },
      "i2.8xlarge"  : { "Arch" : "NATHVM64"  },
      "d2.xlarge"   : { "Arch" : "NATHVM64"  },
      "d2.2xlarge"  : { "Arch" : "NATHVM64"  },
      "d2.4xlarge"  : { "Arch" : "NATHVM64"  },
      "d2.8xlarge"  : { "Arch" : "NATHVM64"  },
      "hi1.4xlarge" : { "Arch" : "NATHVM64"  },
      "hs1.8xlarge" : { "Arch" : "NATHVM64"  },
      "cr1.8xlarge" : { "Arch" : "NATHVM64"  },
      "cc2.8xlarge" : { "Arch" : "NATHVM64"  }
    }
,
    "AWSRegionArch2AMI" : {
      "us-east-1"        : {"PV64" : "ami-2a69aa47", "HVM64" : "ami-6869aa05", "HVMG2" : "ami-22b68b59"},
      "us-west-2"        : {"PV64" : "ami-7f77b31f", "HVM64" : "ami-7172b611", "HVMG2" : "ami-be4ea3c6"},
      "us-west-1"        : {"PV64" : "ami-a2490dc2", "HVM64" : "ami-31490d51", "HVMG2" : "ami-cfe5cfaf"},
      "eu-west-1"        : {"PV64" : "ami-4cdd453f", "HVM64" : "ami-f9dd458a", "HVMG2" : "ami-aedb26d7"},
      "eu-west-2"        : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-886369ec", "HVMG2" : "NOT_SUPPORTED"},
      "eu-central-1"     : {"PV64" : "ami-6527cf0a", "HVM64" : "ami-ea26ce85", "HVMG2" : "ami-40b8102f"},
      "ap-northeast-1"   : {"PV64" : "ami-3e42b65f", "HVM64" : "ami-374db956", "HVMG2" : "ami-d95aabbf"},
      "ap-northeast-2"   : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-2b408b45", "HVMG2" : "NOT_SUPPORTED"},
      "ap-southeast-1"   : {"PV64" : "ami-df9e4cbc", "HVM64" : "ami-a59b49c6", "HVMG2" : "ami-15660276"},
      "ap-southeast-2"   : {"PV64" : "ami-63351d00", "HVM64" : "ami-dc361ebf", "HVMG2" : "ami-0b5a4168"},
      "ap-south-1"       : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-ffbdd790", "HVMG2" : "ami-f4cdb79b"},
      "us-east-2"        : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-f6035893", "HVMG2" : "NOT_SUPPORTED"},
      "ca-central-1"     : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-730ebd17", "HVMG2" : "NOT_SUPPORTED"},
      "sa-east-1"        : {"PV64" : "ami-1ad34676", "HVM64" : "ami-6dd04501", "HVMG2" : "NOT_SUPPORTED"},
      "cn-north-1"       : {"PV64" : "ami-77559f1a", "HVM64" : "ami-8e6aa0e3", "HVMG2" : "NOT_SUPPORTED"}
    }

  },

  "Resources" : {

    "VPC" : {
      "Type" : "AWS::EC2::VPC",
      "Properties" : {
        "CidrBlock" : "10.0.0.0/16",
        "Tags" : [ {"Key" : "Application", "Value" : { "Ref" : "AWS::StackId"} } ]
      }
    },

    "Subnet" : {
      "Type" : "AWS::EC2::Subnet",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "CidrBlock" : "10.0.0.0/24",
        "Tags" : [ {"Key" : "Application", "Value" : { "Ref" : "AWS::StackId"} } ]
      }
    },

    "InternetGateway" : {
      "Type" : "AWS::EC2::InternetGateway",
      "Properties" : {
        "Tags" : [ {"Key" : "Application", "Value" : { "Ref" : "AWS::StackId"} } ]
      }
    },

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

    "RouteTable" : {
      "Type" : "AWS::EC2::RouteTable",
      "Properties" : {
        "VpcId" : {"Ref" : "VPC"},
        "Tags" : [ {"Key" : "Application", "Value" : { "Ref" : "AWS::StackId"} } ]
      }
    },

    "Route" : {
      "Type" : "AWS::EC2::Route",
      "DependsOn" : "AttachGateway",
      "Properties" : {
        "RouteTableId" : { "Ref" : "RouteTable" },
        "DestinationCidrBlock" : "0.0.0.0/0",
        "GatewayId" : { "Ref" : "InternetGateway" }
      }
    },

    "SubnetRouteTableAssociation" : {
      "Type" : "AWS::EC2::SubnetRouteTableAssociation",
      "Properties" : {
        "SubnetId" : { "Ref" : "Subnet" },
        "RouteTableId" : { "Ref" : "RouteTable" }
      }
    },

    "NetworkAcl" : {
      "Type" : "AWS::EC2::NetworkAcl",
      "Properties" : {
        "VpcId" : {"Ref" : "VPC"},
        "Tags" : [ {"Key" : "Application", "Value" : { "Ref" : "AWS::StackId"} } ]
      }
    },

    "InboundHTTPNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : {"Ref" : "NetworkAcl"},
        "RuleNumber" : "100",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : {"From" : "80", "To" : "80"}
      }
    },

    "InboundSSHNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : {"Ref" : "NetworkAcl"},
        "RuleNumber" : "101",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : {"From" : "22", "To" : "22"}
      }
    },

    "InboundResponsePortsNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : {"Ref" : "NetworkAcl"},
        "RuleNumber" : "102",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : {"From" : "1024", "To" : "65535"}
      }
    },

    "OutBoundHTTPNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : {"Ref" : "NetworkAcl"},
        "RuleNumber" : "100",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "true",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : {"From" : "80", "To" : "80"}
      }
    },

    "OutBoundHTTPSNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : {"Ref" : "NetworkAcl"},
        "RuleNumber" : "101",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "true",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : {"From" : "443", "To" : "443"}
      }
    },

    "OutBoundResponsePortsNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : {"Ref" : "NetworkAcl"},
        "RuleNumber" : "102",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "true",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : {"From" : "1024", "To" : "65535"}
      }
    },

    "SubnetNetworkAclAssociation" : {
      "Type" : "AWS::EC2::SubnetNetworkAclAssociation",
      "Properties" : {
        "SubnetId" : { "Ref" : "Subnet" },
        "NetworkAclId" : { "Ref" : "NetworkAcl" }
      }
    },

    "IPAddress" : {
      "Type" : "AWS::EC2::EIP",
      "DependsOn" : "AttachGateway",
      "Properties" : {
        "Domain" : "vpc",
        "InstanceId" : { "Ref" : "WebServerInstance" }
      }
    },

    "InstanceSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "GroupDescription" : "Enable SSH access via port 22",
        "SecurityGroupIngress" : [
          {"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation"}},
          { "IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"}
         ]
      }
    },


    "WebServerInstance" : {
      "Type" : "AWS::EC2::Instance",
      "DependsOn" : "AttachGateway",
      "Metadata" : {
        "Comment" : "Install a simple application",
        "AWS::CloudFormation::Init" : {
          "config" : {
            "packages" : {
              "yum" : {
                "httpd"             : []
              }
            },

            "files" : {
              "/var/www/html/index.html" : {
                "content" : { "Fn::Join" : ["\n", [
                  "<img src=\"", {"Fn::FindInMap" : ["Region2Examples", {"Ref" : "AWS::Region"}, "Examples"]}, "/cloudformation_graphic.png\" alt=\"AWS CloudFormation Logo\"/>",
                  "<h1>Congratulations, you have successfully launched the AWS CloudFormation sample.</h1>"
                ]]},
                "mode"    : "000644",
                "owner"   : "root",
                "group"   : "root"
              },

              "/etc/cfn/cfn-hup.conf" : {
                "content" : { "Fn::Join" : ["", [
                  "[main]\n",
                  "stack=", { "Ref" : "AWS::StackId" }, "\n",
                  "region=", { "Ref" : "AWS::Region" }, "\n"
                ]]},
                "mode"    : "000400",
                "owner"   : "root",
                "group"   : "root"
              },

              "/etc/cfn/hooks.d/cfn-auto-reloader.conf" : {
                "content": { "Fn::Join" : ["", [
                  "[cfn-auto-reloader-hook]\n",
                  "triggers=post.update\n",
                  "path=Resources.WebServerInstance.Metadata.AWS::CloudFormation::Init\n",
                  "action=/opt/aws/bin/cfn-init -v ",
                  "         --stack ", { "Ref" : "AWS::StackName" },
                  "         --resource WebServerInstance ",
                  "         --region ", { "Ref" : "AWS::Region" }, "\n",
                  "runas=root\n"
                ]]},
                "mode"    : "000400",
                "owner"   : "root",
                "group"   : "root"
              }
            },

            "services" : {
              "sysvinit" : {
                "httpd"    : { "enabled" : "true", "ensureRunning" : "true" },
                "cfn-hup" : { "enabled" : "true", "ensureRunning" : "true", 
                              "files" : ["/etc/cfn/cfn-hup.conf", "/etc/cfn/hooks.d/cfn-auto-reloader.conf"]}
              }
            }
          }
        }
      },
      "Properties" : {
        "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
                          { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] },
        "InstanceType" : { "Ref" : "InstanceType" },
        "KeyName" : { "Ref" : "KeyName" },
        "Tags" : [ {"Key" : "Application", "Value" : { "Ref" : "AWS::StackId"} } ],
        "NetworkInterfaces" : [{
          "GroupSet"                 : [{ "Ref" : "InstanceSecurityGroup" }],
          "AssociatePublicIpAddress" : "true",
          "DeviceIndex"              : "0",
          "DeleteOnTermination"      : "true",
          "SubnetId"                 : { "Ref" : "Subnet" }
        }],
        "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
             "#!/bin/bash -xe\n",
             "yum update -y aws-cfn-bootstrap\n",

             "/opt/aws/bin/cfn-init -v ",
             "         --stack ", { "Ref" : "AWS::StackName" },
             "         --resource WebServerInstance ",
             "         --region ", { "Ref" : "AWS::Region" }, "\n",

             "/opt/aws/bin/cfn-signal -e $? ",
             "         --stack ", { "Ref" : "AWS::StackName" },
             "         --resource WebServerInstance ",
             "         --region ", { "Ref" : "AWS::Region" }, "\n"
        ]]}}
      },
      "CreationPolicy" : {
        "ResourceSignal" : {
          "Timeout" : "PT15M"
        }
      }
    }
  },

  "Outputs" : {
    "URL" : {
      "Value" : { "Fn::Join" : [ "", ["http://", { "Fn::GetAtt" : ["WebServerInstance", "PublicIp"] }]]},
      "Description" : "Newly created application URL"
    }
  }
}