CloufFormationSample.json

{
  "AWSTemplateFormatVersion" : "2010-09-09",
  "Description" : "A simple stack that launches an instance.",
  "Parameters" : {
    "InstanceTypeParameter" : {
      "Type" : "String",
      "Default" : "t2.micro"
    },
    "KeyNameParameter" : {
      "Type" : "String"
    }
  },

  "Resources" : {
    "Ec2Instance" : {
      "Type" : "AWS::EC2::Instance",
      "Properties" : {
        "ImageId" : "ami-18869819",
        "InstanceType" : { "Ref" : "InstanceTypeParameter" },
        "KeyName" : { "Ref" : "KeyNameParameter" },
        "SecurityGroupIds" : [ "sg-0da20468" ],
        "Tags" : [ {"Key": "foo", "Value": "bar"} ]
      }
    }
  },

  "Outputs" : {
    "InstanceId" : {
      "Value" : { "Ref" : "Ec2Instance" } 
    },
    "AvailabilityZone" : {
      "Value" : { "Fn::GetAtt" : [ "Ec2Instance", "AvailabilityZone" ]}
    }
  }
}