AWS::EC2::SpotFleet:
  Properties:
    SpotFleetRequestConfigData: |
      {
        "AllocationStrategy" => "String", #lowestPrice | diversified
        "ExcessCapacityTerminationPolicy" => "String", #  NoTermination | Default
        "IamFleetRole" => "The Amazon Resource Name (ARN) of an AWS Identity and Access Management (IAM) role that grants the Spot fleet the ability to bid on",
        "LaunchSpecifications" => [ 
          {
            "BlockDeviceMappings" => [
              {
                "DeviceName"  => "such as /dev/dsh or xvdh",
                "Ebs"         => "You can specify either the VirtualName or Ebs, but not both.",
                "NoDevice"    => "Boolean", # Suppresses the specified device that is included in the block device mapping of the Amazon Machine Image 
                "VirtualName" => "The name must be in the form ephemeralX where X is a number equal to or greater than zero (0), for example, ephemeral0."
              }
            ],
            "EbsOptimized"       => "Boolean",
            "IamInstanceProfile" => {"Arn" => "IamInstanceProfile" },
            "ImageId"            => "String",
            "InstanceType"       => "String",
            "KernelId"           => "String",
            "KeyName"            => "String",
            "Monitoring"         => "Boolean",
            "NetworkInterfaces"  => [
              {
                "AssociatePublicIpAddress"       => "Boolean",
                "DeleteOnTermination"            => "Boolean",
                "Description"                    => "String",
                "DeviceIndex"                    => "Integer",
                "Groups"                         => ["A list of security group IDs to associate with this network interface."],
                "NetworkInterfaceId"             => "String",
                "PrivateIpAddresses"             => ["One or more private IP addresses to assign to the network interface. "],
                "SecondaryPrivateIpAddressCount" => "Integer", #The number of secondary private IP addresses that Amazon Elastic Compute Cloud (Amazon EC2) automatically assigns
                "SubnetId"                       => "String"
              }
            ],
            "Placement"          => {
              "AvailabilityZone" => "String",
              "GroupName"        => "The name of the placement group (for cluster instances)."
            },
            "RamdiskId"          => "String",
            "SecurityGroups"     => [{"GroupId" => "sg-xxxx"}],
            "SubnetId"           => "String",
            "UserData"           => "Base64-encoded MIME user data that instances use when starting up.", # FnBase64(data)
            "WeightedCapacity"   => "Number"
          }
        ],
        "SpotPrice"              => "String",
        "TargetCapacity"         => "Integer", #The number of units to request. You can choose to set the target capacity as instances or a performance characteristic that is important to your application workload, such as vCPUs, memory, or I/O.
        "TerminateInstancesWithExpiration" => "Boolean", # Indicates whether running Spot instances are terminated when the Spot fleet request expires.
        "ValidFrom"              => "String", # The start date and time of the request, in UTC format (YYYY-MM-DDTHH:MM:SSZ). By default, Amazon EC2 starts fulfilling the request immediately.
        "ValidUntil"             => "String" # The end date and time of the request, in UTC format (YYYY-MM-DDTHH:MM:SSZ). After the end date and time, Amazon EC2 doesn't request new Spot instances or enable them to fulfill the request.
      }