AWS SDK Version 3 for .NET
API Reference

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Modifies the default credit option for CPU usage of burstable performance instances. The default credit option is set at the account level per Amazon Web Services Region, and is specified per instance family. All new burstable performance instances in the account launch using the default credit option.

ModifyDefaultCreditSpecification is an asynchronous operation, which works at an Amazon Web Services Region level and modifies the credit option for each Availability Zone. All zones in a Region are updated within five minutes. But if instances are launched during this operation, they might not get the new credit option until the zone is updated. To verify whether the update has occurred, you can call GetDefaultCreditSpecification and check DefaultCreditSpecification for updates.

For more information, see Burstable performance instances in the Amazon EC2 User Guide.


This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginModifyDefaultCreditSpecification and EndModifyDefaultCreditSpecification.

Namespace: Amazon.EC2
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z


public virtual Task<ModifyDefaultCreditSpecificationResponse> ModifyDefaultCreditSpecificationAsync(
         ModifyDefaultCreditSpecificationRequest request,
         CancellationToken cancellationToken


Type: Amazon.EC2.Model.ModifyDefaultCreditSpecificationRequest

Container for the necessary parameters to execute the ModifyDefaultCreditSpecification service method.

Type: System.Threading.CancellationToken

A cancellation token that can be used by other objects or threads to receive notice of cancellation.

Return Value

The response from the ModifyDefaultCreditSpecification service method, as returned by EC2.

Version Information

Supported in: 8.0 and newer, Core 3.1

.NET Standard:
Supported in: 2.0

.NET Framework:
Supported in: 4.5 and newer

See Also