AWS Lambda functions are widely used in your company by different teams. There is a requirement to extend the Lambda functions to integrate with other tools for monitoring, observability and security such as AppDynamics, HashiCorp, Splunk, etc. With the integration, some additional code needs to be run during function initialization, invocation or shut down. Which of the following options can achieve the requirement by extending Lambda’s execution environment?

Answer options:

A.Deploy Lambda extensions through Lambda layers by adding the extensions in the Lambda .zip archives.
B.Deploy the required tools in other dedicated Lambda functions and integrate existing Lambda functions with these dedicated Lambda functions.
C.Extend Lambda function with CloudWatch event rules by configuring third-party Lambda functions to process events.
D.Integrate the Lambda function with Amazon SQS and process the queue messages by Lambda extensions.

Correct Answer: A
Option A is CORRECT because Lambda Extensions provides an easy way to integrate Lambda with other tools. The Lambda Extensions can be deployed through Lambda Layers that are generated by the .zip archive files. Lambda service extracts the extension files from the Lambda layers and manages the lifecycle of extensions.
Option B is incorrect because there is no need to create other Lambda functions. The existing Lambda functions should be extended by Lambda Extensions.
Option C is incorrect because CloudWatch event rules cannot trigger additional code during function initialization or shut down. Creating extra Lambda functions is not necessary.
Option D is incorrect because Lambda extensions cannot be used to process SQS messages from Lambda functions. SQS queues are not required for building extensions for AWS Lambda.
References:
https://aws.amazon.com/blogs/compute/building-extensions-for-aws-lambda-in-preview/,
https://docs.aws.amazon.com/lambda/latest/dg/using-extensions.html