# AwsEc2LaunchTemplateDataCapacityReservationSpecificationDetails
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 Specifies the Capacity Reservation targeting option of an Amazon EC2 instance. 

## Contents
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 ** CapacityReservationPreference **   <a name="securityhub-Type-AwsEc2LaunchTemplateDataCapacityReservationSpecificationDetails-CapacityReservationPreference"></a>
 Indicates the instance's Capacity Reservation preferences. If equal to `open`, the instance can run in any open Capacity Reservation that has matching attributes (instance type, platform, Availability Zone). If equal to `none`, the instance avoids running in a Capacity Reservation even if one is available. The instance runs in On-Demand capacity.   
Type: String  
Pattern: `.*\S.*`   
Required: No

 ** CapacityReservationTarget **   <a name="securityhub-Type-AwsEc2LaunchTemplateDataCapacityReservationSpecificationDetails-CapacityReservationTarget"></a>
 Specifies a target Capacity Reservation.   
Type: [AwsEc2LaunchTemplateDataCapacityReservationSpecificationCapacityReservationTargetDetails](API_AwsEc2LaunchTemplateDataCapacityReservationSpecificationCapacityReservationTargetDetails.md) object  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/securityhub-2018-10-26/AwsEc2LaunchTemplateDataCapacityReservationSpecificationDetails) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/securityhub-2018-10-26/AwsEc2LaunchTemplateDataCapacityReservationSpecificationDetails) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/securityhub-2018-10-26/AwsEc2LaunchTemplateDataCapacityReservationSpecificationDetails)