Which AWS service can be used to detect & analyse performance issues related to AWS Lambda applications?

Answer options:

A.AWS CloudTrail
B.Amazon CloudWatch
C.AWS X-Ray
D.AWS Config

Correct Answer – C
AWS X-Ray can be used to detect performance issues for AWS Lambda applications. AWS Lambda sends traces to X-Ray which is further analysed to generate a performance report.
Option A is incorrect because AWS CloudTrail will capture API calls made by AWS Lambda.
Option B is incorrect because Amazon CloudWatch will track the number of requests, execution time request & error generated, but it won’t help in analysing end-to-end application performance.
Option D is incorrect because AWS Config will not help to detect performance issues with AWS Lambda. AWS Config can audit configuration of AWS resource.
For more information on debugging AWS Lambda application performance, refer to the following URL:
https://docs.aws.amazon.com/lambda/latest/dg/lambda-monitoring.html