# CapacityReservationSpecificationResponse
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Describes the instance's Capacity Reservation targeting preferences. The action returns the `capacityReservationPreference` response element if the instance is configured to run in On-Demand capacity, or if it is configured in run in any `open` Capacity Reservation that has matching attributes (instance type, platform, Availability Zone). The action returns the `capacityReservationTarget` response element if the instance explicily targets a specific Capacity Reservation or Capacity Reservation group.

## Contents
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 ** capacityReservationPreference **   
Describes the instance's Capacity Reservation preferences. Possible preferences include:  
+  `open` - The instance can run in any `open` Capacity Reservation that has matching attributes (instance type, platform, Availability Zone).
+  `none` - The instance avoids running in a Capacity Reservation even if one is available. The instance runs in On-Demand capacity.
Type: String  
Valid Values: `capacity-reservations-only | open | none`   
Required: No

 ** capacityReservationTarget **   
Information about the targeted Capacity Reservation or Capacity Reservation group.  
Type: [CapacityReservationTargetResponse](API_CapacityReservationTargetResponse.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/ec2-2016-11-15/CapacityReservationSpecificationResponse) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/CapacityReservationSpecificationResponse) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/CapacityReservationSpecificationResponse)