# LambdaAction


Calls a Lambda function, passing in information about the detector model instance and the event that triggered the action.

## Contents


 ** functionArn **   <a name="iotevents-Type-LambdaAction-functionArn"></a>
The ARN of the Lambda function that is executed.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 2048.  
Required: Yes

 ** payload **   <a name="iotevents-Type-LambdaAction-payload"></a>
You can configure the action payload when you send a message to a Lambda function.  
Type: [Payload](API_Payload.md) object  
Required: No

## See Also


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/iotevents-2018-07-27/LambdaAction) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotevents-2018-07-27/LambdaAction) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotevents-2018-07-27/LambdaAction)