# StateTemplateUpdateStrategy
<a name="API_StateTemplateUpdateStrategy"></a>

The update strategy for the state template. Vehicles associated with the state template can stream telemetry data with either an `onChange` or `periodic` update strategy. 

**Important**  
 AWS IoT FleetWise will no longer be open to new customers starting April 30, 2026. If you would like to use AWS IoT FleetWise, sign up prior to that date. Existing customers can continue to use the service as normal. For more information, see [AWS IoT FleetWise availability change](https://docs.aws.amazon.com/iot-fleetwise/latest/developerguide/iotfleetwise-availability-change.html).

## Contents
<a name="API_StateTemplateUpdateStrategy_Contents"></a>

**Important**  
This data type is a UNION, so only one of the following members can be specified when used or returned.

 ** onChange **   <a name="iotfleetwise-Type-StateTemplateUpdateStrategy-onChange"></a>
Vehicles associated with the state template will stream telemetry data when there is a change.  
Type: [OnChangeStateTemplateUpdateStrategy](API_OnChangeStateTemplateUpdateStrategy.md) object  
Required: No

 ** periodic **   <a name="iotfleetwise-Type-StateTemplateUpdateStrategy-periodic"></a>
Vehicles associated with the state template will stream telemetry data during a specified time period.  
Type: [PeriodicStateTemplateUpdateStrategy](API_PeriodicStateTemplateUpdateStrategy.md) object  
Required: No

## See Also
<a name="API_StateTemplateUpdateStrategy_SeeAlso"></a>

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/iotfleetwise-2021-06-17/StateTemplateUpdateStrategy) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotfleetwise-2021-06-17/StateTemplateUpdateStrategy) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotfleetwise-2021-06-17/StateTemplateUpdateStrategy)