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Which statements about invocation models are correct?

publish date: 2024/08/29 01:30:19.803396 UTC

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Amazon S3 triggers Lambda via an asynchronous push

Amazon API Gateway triggers Lambda synchronously

When Alexa is the event source, Lambda will make three attempts to invoke the function before putting the failed invocation into the dead letter queue (DLQ)

DynamoDB must have an execution role to invoke Lambda

Amazon SQS triggers Lambda via the polling invocation model

Correct Answer

(1) Amazon S3 triggers Lambda via an asynchronous push

(2) Amazon API Gateway triggers Lambda synchronously

(3) Amazon SQS triggers Lambda via the polling invocation model

Explanation

Well done! Alexa is a synchronous event source, so Lambda will not attempt to retry the invocation.

Reference

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