"Resources" : {
        "MyWebServer" : {
            "Type": "AWS::EC2::Instance",
            "Properties" : {
                "ImageId" : "ami-01e444924a2233b07",
                "InstanceType" : { "Ref" : "Instanzentyp" },
                "KeyName": { "Ref": "SSHSchluessel" },
                "SecurityGroups" : [ { "Ref" : "MySecurityGroup" } ],
