AWS Tools for Windows PowerShell
Command Reference

AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

Synopsis

Calls the Amazon Elastic Compute Cloud (EC2) RequestSpotFleet API operation.

Syntax

Request-EC2SpotFleet
-SpotFleetRequestConfig_SpotPrice <String>
-SpotFleetRequestConfig_AllocationStrategy <AllocationStrategy>
-ClassicLoadBalancersConfig_ClassicLoadBalancer <ClassicLoadBalancer[]>
-SpotFleetRequestConfig_ClientToken <String>
-SpotFleetRequestConfig_Context <String>
-SpotFleetRequestConfig_ExcessCapacityTerminationPolicy <ExcessCapacityTerminationPolicy>
-SpotFleetRequestConfig_FulfilledCapacity <Double>
-SpotFleetRequestConfig_IamFleetRole <String>
-SpotFleetRequestConfig_InstanceInterruptionBehavior <InstanceInterruptionBehavior>
-SpotFleetRequestConfig_InstancePoolsToUseCount <Int32>
-SpotFleetRequestConfig_LaunchSpecification <SpotFleetLaunchSpecification[]>
-SpotFleetRequestConfig_LaunchTemplateConfig <LaunchTemplateConfig[]>
-SpotFleetRequestConfig_OnDemandAllocationStrategy <OnDemandAllocationStrategy>
-SpotFleetRequestConfig_OnDemandFulfilledCapacity <Double>
-SpotFleetRequestConfig_OnDemandMaxTotalPrice <String>
-SpotFleetRequestConfig_OnDemandTargetCapacity <Int32>
-CapacityRebalance_ReplacementStrategy <ReplacementStrategy>
-SpotFleetRequestConfig_ReplaceUnhealthyInstance <Boolean>
-SpotFleetRequestConfig_SpotMaxTotalPrice <String>
-SpotFleetRequestConfig_TagSpecification <TagSpecification[]>
-SpotFleetRequestConfig_TargetCapacity <Int32>
-SpotFleetRequestConfig_TargetCapacityUnitType <TargetCapacityUnitType>
-TargetGroupsConfig_TargetGroup <TargetGroup[]>
-SpotFleetRequestConfig_TerminateInstancesWithExpiration <Boolean>
-CapacityRebalance_TerminationDelay <Int32>
-SpotFleetRequestConfig_Type <FleetType>
-SpotFleetRequestConfig_UtcValidFrom <DateTime>
-SpotFleetRequestConfig_UtcValidUntil <DateTime>
-SpotFleetRequestConfig_ValidFrom <DateTime>
-SpotFleetRequestConfig_ValidUntil <DateTime>
-Select <String>
-PassThru <SwitchParameter>
-Force <SwitchParameter>
-ClientConfig <AmazonEC2Config>

Description

Creates a Spot Fleet request. The Spot Fleet request specifies the total target capacity and the On-Demand target capacity. Amazon EC2 calculates the difference between the total capacity and On-Demand capacity, and launches the difference as Spot capacity. You can submit a single request that includes multiple launch specifications that vary by instance type, AMI, Availability Zone, or subnet. By default, the Spot Fleet requests Spot Instances in the Spot Instance pool where the price per unit is the lowest. Each launch specification can include its own instance weighting that reflects the value of the instance type to your application workload. Alternatively, you can specify that the Spot Fleet distribute the target capacity across the Spot pools included in its launch specifications. By ensuring that the Spot Instances in your Spot Fleet are in different Spot pools, you can improve the availability of your fleet. You can specify tags for the Spot Fleet request and instances launched by the fleet. You cannot tag other resource types in a Spot Fleet request because only the spot-fleet-request and instance resource types are supported. For more information, see Spot Fleet requests in the Amazon EC2 User Guide. We strongly discourage using the RequestSpotFleet API because it is a legacy API with no planned investment. For options for requesting Spot Instances, see Which is the best Spot request method to use? in the Amazon EC2 User Guide.

Parameters

-CapacityRebalance_ReplacementStrategy <ReplacementStrategy>
The replacement strategy to use. Only available for fleets of type maintain.launch - Spot Fleet launches a new replacement Spot Instance when a rebalance notification is emitted for an existing Spot Instance in the fleet. Spot Fleet does not terminate the instances that receive a rebalance notification. You can terminate the old instances, or you can leave them running. You are charged for all instances while they are running. launch-before-terminate - Spot Fleet launches a new replacement Spot Instance when a rebalance notification is emitted for an existing Spot Instance in the fleet, and then, after a delay that you specify (in TerminationDelay), terminates the instances that received a rebalance notification.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_SpotMaintenanceStrategies_CapacityRebalance_ReplacementStrategy
-CapacityRebalance_TerminationDelay <Int32>
The amount of time (in seconds) that Amazon EC2 waits before terminating the old Spot Instance after launching a new replacement Spot Instance.Required when ReplacementStrategy is set to launch-before-terminate.Not valid when ReplacementStrategy is set to launch.Valid values: Minimum value of 120 seconds. Maximum value of 7200 seconds.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_SpotMaintenanceStrategies_CapacityRebalance_TerminationDelay
-ClassicLoadBalancersConfig_ClassicLoadBalancer <ClassicLoadBalancer[]>
One or more Classic Load Balancers.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_LoadBalancersConfig_ClassicLoadBalancersConfig_ClassicLoadBalancers
-ClientConfig <AmazonEC2Config>
Amazon.PowerShell.Cmdlets.EC2.AmazonEC2ClientCmdlet.ClientConfig
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-Force <SwitchParameter>
This parameter overrides confirmation prompts to force the cmdlet to continue its operation. This parameter should always be used with caution.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-PassThru <SwitchParameter>
Changes the cmdlet behavior to return the value passed to the SpotFleetRequestConfig_SpotPrice parameter. The -PassThru parameter is deprecated, use -Select '^SpotFleetRequestConfig_SpotPrice' instead. This parameter will be removed in a future version.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-Select <String>
Use the -Select parameter to control the cmdlet output. The default value is '*'. Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.EC2.Model.RequestSpotFleetResponse). Specifying the name of a property of type Amazon.EC2.Model.RequestSpotFleetResponse will result in that property being returned. Specifying -Select '^ParameterName' will result in the cmdlet returning the selected cmdlet parameter value.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_AllocationStrategy <AllocationStrategy>
The strategy that determines how to allocate the target Spot Instance capacity across the Spot Instance pools specified by the Spot Fleet launch configuration. For more information, see Allocation strategies for Spot Instances in the Amazon EC2 User Guide.
priceCapacityOptimized (recommended)
Spot Fleet identifies the pools with the highest capacity availability for the number of instances that are launching. This means that we will request Spot Instances from the pools that we believe have the lowest chance of interruption in the near term. Spot Fleet then requests Spot Instances from the lowest priced of these pools.
capacityOptimized
Spot Fleet identifies the pools with the highest capacity availability for the number of instances that are launching. This means that we will request Spot Instances from the pools that we believe have the lowest chance of interruption in the near term. To give certain instance types a higher chance of launching first, use capacityOptimizedPrioritized. Set a priority for each instance type by using the Priority parameter for LaunchTemplateOverrides. You can assign the same priority to different LaunchTemplateOverrides. EC2 implements the priorities on a best-effort basis, but optimizes for capacity first. capacityOptimizedPrioritized is supported only if your Spot Fleet uses a launch template. Note that if the OnDemandAllocationStrategy is set to prioritized, the same priority is applied when fulfilling On-Demand capacity.
diversified
Spot Fleet requests instances from all of the Spot Instance pools that you specify.
lowestPrice
Spot Fleet requests instances from the lowest priced Spot Instance pool that has available capacity. If the lowest priced pool doesn't have available capacity, the Spot Instances come from the next lowest priced pool that has available capacity. If a pool runs out of capacity before fulfilling your desired capacity, Spot Fleet will continue to fulfill your request by drawing from the next lowest priced pool. To ensure that your desired capacity is met, you might receive Spot Instances from several pools. Because this strategy only considers instance price and not capacity availability, it might lead to high interruption rates.
Default: lowestPrice
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_ClientToken <String>
A unique, case-sensitive identifier that you provide to ensure the idempotency of your listings. This helps to avoid duplicate listings. For more information, see Ensuring Idempotency.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_Context <String>
Reserved.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_ExcessCapacityTerminationPolicy <ExcessCapacityTerminationPolicy>
Indicates whether running instances should be terminated if you decrease the target capacity of the Spot Fleet request below the current size of the Spot Fleet.Supported only for fleets of type maintain.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_FulfilledCapacity <Double>
The number of units fulfilled by this request compared to the set target capacity. You cannot set this value.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_IamFleetRole <String>
The Amazon Resource Name (ARN) of an Identity and Access Management (IAM) role that grants the Spot Fleet the permission to request, launch, terminate, and tag instances on your behalf. For more information, see Spot Fleet prerequisites in the Amazon EC2 User Guide. Spot Fleet can terminate Spot Instances on your behalf when you cancel its Spot Fleet request using CancelSpotFleetRequests or when the Spot Fleet request expires, if you set TerminateInstancesWithExpiration.
Required?True
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_InstanceInterruptionBehavior <InstanceInterruptionBehavior>
The behavior when a Spot Instance is interrupted. The default is terminate.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_InstancePoolsToUseCount <Int32>
The number of Spot pools across which to allocate your target Spot capacity. Valid only when Spot AllocationStrategy is set to lowest-price. Spot Fleet selects the cheapest Spot pools and evenly allocates your target Spot capacity across the number of Spot pools that you specify.Note that Spot Fleet attempts to draw Spot Instances from the number of pools that you specify on a best effort basis. If a pool runs out of Spot capacity before fulfilling your target capacity, Spot Fleet will continue to fulfill your request by drawing from the next cheapest pool. To ensure that your target capacity is met, you might receive Spot Instances from more than the number of pools that you specified. Similarly, if most of the pools have no Spot capacity, you might receive your full target capacity from fewer than the number of pools that you specified.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_LaunchSpecification <SpotFleetLaunchSpecification[]>
The launch specifications for the Spot Fleet request. If you specify LaunchSpecifications, you can't specify LaunchTemplateConfigs. If you include On-Demand capacity in your request, you must use LaunchTemplateConfigs.If an AMI specified in a launch specification is deregistered or disabled, no new instances can be launched from the AMI. For fleets of type maintain, the target capacity will not be maintained.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_LaunchSpecifications
-SpotFleetRequestConfig_LaunchTemplateConfig <LaunchTemplateConfig[]>
The launch template and overrides. If you specify LaunchTemplateConfigs, you can't specify LaunchSpecifications. If you include On-Demand capacity in your request, you must use LaunchTemplateConfigs.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_LaunchTemplateConfigs
-SpotFleetRequestConfig_OnDemandAllocationStrategy <OnDemandAllocationStrategy>
The order of the launch template overrides to use in fulfilling On-Demand capacity. If you specify lowestPrice, Spot Fleet uses price to determine the order, launching the lowest price first. If you specify prioritized, Spot Fleet uses the priority that you assign to each Spot Fleet launch template override, launching the highest priority first. If you do not specify a value, Spot Fleet defaults to lowestPrice.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_OnDemandFulfilledCapacity <Double>
The number of On-Demand units fulfilled by this request compared to the set target On-Demand capacity.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_OnDemandMaxTotalPrice <String>
The maximum amount per hour for On-Demand Instances that you're willing to pay. You can use the onDemandMaxTotalPrice parameter, the spotMaxTotalPrice parameter, or both parameters to ensure that your fleet cost does not exceed your budget. If you set a maximum price per hour for the On-Demand Instances and Spot Instances in your request, Spot Fleet will launch instances until it reaches the maximum amount you're willing to pay. When the maximum amount you're willing to pay is reached, the fleet stops launching instances even if it hasn’t met the target capacity.If your fleet includes T instances that are configured as unlimited, and if their average CPU usage exceeds the baseline utilization, you will incur a charge for surplus credits. The onDemandMaxTotalPrice does not account for surplus credits, and, if you use surplus credits, your final cost might be higher than what you specified for onDemandMaxTotalPrice. For more information, see Surplus credits can incur charges in the EC2 User Guide.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_OnDemandTargetCapacity <Int32>
The number of On-Demand units to request. You can choose to set the target capacity in terms of instances or a performance characteristic that is important to your application workload, such as vCPUs, memory, or I/O. If the request type is maintain, you can specify a target capacity of 0 and add capacity later.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_ReplaceUnhealthyInstance <Boolean>
Indicates whether Spot Fleet should replace unhealthy instances.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_ReplaceUnhealthyInstances
-SpotFleetRequestConfig_SpotMaxTotalPrice <String>
The maximum amount per hour for Spot Instances that you're willing to pay. You can use the spotMaxTotalPrice parameter, the onDemandMaxTotalPrice parameter, or both parameters to ensure that your fleet cost does not exceed your budget. If you set a maximum price per hour for the On-Demand Instances and Spot Instances in your request, Spot Fleet will launch instances until it reaches the maximum amount you're willing to pay. When the maximum amount you're willing to pay is reached, the fleet stops launching instances even if it hasn’t met the target capacity.If your fleet includes T instances that are configured as unlimited, and if their average CPU usage exceeds the baseline utilization, you will incur a charge for surplus credits. The spotMaxTotalPrice does not account for surplus credits, and, if you use surplus credits, your final cost might be higher than what you specified for spotMaxTotalPrice. For more information, see Surplus credits can incur charges in the EC2 User Guide.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_SpotPrice <String>
The maximum price per unit hour that you are willing to pay for a Spot Instance. We do not recommend using this parameter because it can lead to increased interruptions. If you do not specify this parameter, you will pay the current Spot price.If you specify a maximum price, your instances will be interrupted more frequently than if you do not specify this parameter.
Required?False
Position?1
Accept pipeline input?True (ByValue, ByPropertyName)
-SpotFleetRequestConfig_TagSpecification <TagSpecification[]>
The key-value pair for tagging the Spot Fleet request on creation. The value for ResourceType must be spot-fleet-request, otherwise the Spot Fleet request fails. To tag instances at launch, specify the tags in the launch template (valid only if you use LaunchTemplateConfigs) or in the SpotFleetTagSpecification (valid only if you use LaunchSpecifications). For information about tagging after launch, see Tag your resources.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_TagSpecifications
-SpotFleetRequestConfig_TargetCapacity <Int32>
The number of units to request for the Spot Fleet. You can choose to set the target capacity in terms of instances or a performance characteristic that is important to your application workload, such as vCPUs, memory, or I/O. If the request type is maintain, you can specify a target capacity of 0 and add capacity later.
Required?True
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_TargetCapacityUnitType <TargetCapacityUnitType>
The unit for the target capacity. You can specify this parameter only when using attribute-based instance type selection.Default: units (the number of instances)
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_TerminateInstancesWithExpiration <Boolean>
Indicates whether running Spot Instances are terminated when the Spot Fleet request expires.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_Type <FleetType>
The type of request. Indicates whether the Spot Fleet only requests the target capacity or also attempts to maintain it. When this value is request, the Spot Fleet only places the required requests. It does not attempt to replenish Spot Instances if capacity is diminished, nor does it submit requests in alternative Spot pools if capacity is not available. When this value is maintain, the Spot Fleet maintains the target capacity. The Spot Fleet places the required requests to meet capacity and automatically replenishes any interrupted instances. Default: maintain. instant is listed but is not used by Spot Fleet.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_UtcValidFrom <DateTime>
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.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_UtcValidUntil <DateTime>
The end date and time of the request, in UTC format (YYYY-MM-DDTHH:MM:SSZ). After the end date and time, no new Spot Instance requests are placed or able to fulfill the request. If no value is specified, the Spot Fleet request remains until you cancel it.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_ValidFrom <DateTime>
This property is deprecated. Setting this property results in non-UTC DateTimes not being marshalled correctly. Use ValidFromUtc instead. Setting either ValidFrom or ValidFromUtc results in both ValidFrom and ValidFromUtc being assigned, the latest assignment to either one of the two property is reflected in the value of both. ValidFrom is provided for backwards compatibility only and assigning a non-Utc DateTime to it results in the wrong timestamp being passed to the service.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.This parameter is deprecated.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-SpotFleetRequestConfig_ValidUntil <DateTime>
This property is deprecated. Setting this property results in non-UTC DateTimes not being marshalled correctly. Use ValidUntilUtc instead. Setting either ValidUntil or ValidUntilUtc results in both ValidUntil and ValidUntilUtc being assigned, the latest assignment to either one of the two property is reflected in the value of both. ValidUntil is provided for backwards compatibility only and assigning a non-Utc DateTime to it results in the wrong timestamp being passed to the service.The end date and time of the request, in UTC format (YYYY-MM-DDTHH:MM:SSZ). After the end date and time, no new Spot Instance requests are placed or able to fulfill the request. If no value is specified, the Spot Fleet request remains until you cancel it.This parameter is deprecated.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-TargetGroupsConfig_TargetGroup <TargetGroup[]>
One or more target groups.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSpotFleetRequestConfig_LoadBalancersConfig_TargetGroupsConfig_TargetGroups

Common Credential and Region Parameters

-AccessKey <String>
The AWS access key for the user account. This can be a temporary access key if the corresponding session token is supplied to the -SessionToken parameter.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesAK
-Credential <AWSCredentials>
An AWSCredentials object instance containing access and secret key information, and optionally a token for session-based credentials.
Required?False
Position?Named
Accept pipeline input?True (ByValue, ByPropertyName)
-EndpointUrl <String>
The endpoint to make the call against.Note: This parameter is primarily for internal AWS use and is not required/should not be specified for normal usage. The cmdlets normally determine which endpoint to call based on the region specified to the -Region parameter or set as default in the shell (via Set-DefaultAWSRegion). Only specify this parameter if you must direct the call to a specific custom endpoint.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-NetworkCredential <PSCredential>
Used with SAML-based authentication when ProfileName references a SAML role profile. Contains the network credentials to be supplied during authentication with the configured identity provider's endpoint. This parameter is not required if the user's default network identity can or should be used during authentication.
Required?False
Position?Named
Accept pipeline input?True (ByValue, ByPropertyName)
-ProfileLocation <String>
Used to specify the name and location of the ini-format credential file (shared with the AWS CLI and other AWS SDKs)If this optional parameter is omitted this cmdlet will search the encrypted credential file used by the AWS SDK for .NET and AWS Toolkit for Visual Studio first. If the profile is not found then the cmdlet will search in the ini-format credential file at the default location: (user's home directory)\.aws\credentials.If this parameter is specified then this cmdlet will only search the ini-format credential file at the location given.As the current folder can vary in a shell or during script execution it is advised that you use specify a fully qualified path instead of a relative path.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesAWSProfilesLocation, ProfilesLocation
-ProfileName <String>
The user-defined name of an AWS credentials or SAML-based role profile containing credential information. The profile is expected to be found in the secure credential file shared with the AWS SDK for .NET and AWS Toolkit for Visual Studio. You can also specify the name of a profile stored in the .ini-format credential file used with the AWS CLI and other AWS SDKs.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesStoredCredentials, AWSProfileName
-Region <Object>
The system name of an AWS region or an AWSRegion instance. This governs the endpoint that will be used when calling service operations. Note that the AWS resources referenced in a call are usually region-specific.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesRegionToCall
-SecretKey <String>
The AWS secret key for the user account. This can be a temporary secret key if the corresponding session token is supplied to the -SessionToken parameter.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesSK, SecretAccessKey
-SessionToken <String>
The session token if the access and secret keys are temporary session-based credentials.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesST

Outputs

Amazon.EC2.Model.RequestSpotFleetResponse
This cmdlet returns an Amazon.EC2.Model.RequestSpotFleetResponse object containing multiple properties. The object can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack.

Examples

Example 1

$sg = New-Object Amazon.EC2.Model.GroupIdentifier
$sg.GroupId = "sg-12345678"
$lc = New-Object Amazon.EC2.Model.SpotFleetLaunchSpecification
$lc.ImageId = "ami-12345678"
$lc.InstanceType = "m3.medium"
$lc.SecurityGroups.Add($sg) 
Request-EC2SpotFleet -SpotFleetRequestConfig_SpotPrice 0.04 `
-SpotFleetRequestConfig_TargetCapacity 2 `
-SpotFleetRequestConfig_IamFleetRole arn:aws:iam::123456789012:role/my-spot-fleet-role `
-SpotFleetRequestConfig_LaunchSpecification $lc
This example creates a Spot fleet request in the Availability Zone with the lowest price for the specified instance type. If your account supports EC2-VPC only, the Spot fleet launches the instances in the lowest-priced Availability Zone that has a default subnet. If your account supports EC2-Classic, the Spot fleet launches the instances in EC2-Classic in the lowest-priced Availability Zone. Note that the price you pay will not exceed the specified Spot price for the request.
User Guide
Service API Reference
Microsoft Windows Guide
VPC User Guide
AWS Tools for PowerShell User Guide

Supported Version

AWS Tools for PowerShell: 2.x.y.z