Your organization must perform big data analysis to transform data and store the result in the AWS S3 bucket. They have implemented the solution using AWS Lambda due to its zero-administrative maintenance and cost-effective nature. However, in very few cases, the execution is getting abruptly terminated after 15 minutes. They would like to get a notification in such scenarios. What would you do?

Answer options:

A.Setup timer in the code and send a notification when the timer reaches 900 seconds.
B.Configure SES for failures under the Configuration option in the lambda function.
C.Setup the ERROR_NOTIFY environment variable with an email address. Lambda function has an inbuilt feature to send an email during max memory and time out terminations using this environment variable.
D.Configure Dead-letter Queue and send a notification to SNS topic

Answer: D
Option A is not correct. Although you can set the timers in the code, it may not be an accurate measure to determine if the lambda function is terminated after 900 seconds or just finished executing on the 900th second.
Option B is not correct. There is no option to configure AWS SES within the Lambda setup.
Option C is not a valid statement.
Option D is correct. You can forward non-processed payloads to Dead Letter Queue (DLQ) using AWS SQS, AWS SNS.
. 
Refer:
https://aws.amazon.com/about-aws/whats-new/2018/10/aws-lambda-supports-functions-that-can-run-up-to-15-minutes/
https://aws.amazon.com/blogs/compute/robust-serverless-application-design-with-aws-lambda-dlq/