You’ve currently set up an API gateway service in AWS. The API gateway is calling a custom API hosted on an EC2 Instance. There are severe latency issues, and you need to diagnose the reason for those latency issues. Which of the following could be used to address this concern?

Answer options:

A.AWS X-Ray
B.AWS Cloudwatch
C.AWS Cloudtrail
D.AWS VPC Flow logs

Answer – A
The AWS Documentation mentions the following.
AWS X-Ray is an AWS service that allows you to trace latency issues with your Amazon API Gateway APIs. X-Ray collects metadata from the API Gateway service and any downstream services that make up your API. X-Ray uses this metadata to generate a detailed service graph that illustrates latency spikes and other issues that impact your API`s performance.
Option B is invalid since this is used for logging API execution operations.
Option C is invalid since this is used for logging API Gateway API management operations.
Option D is invalid since this is used for logging calls into the VPC.For more information on the API monitoring overview, please refer to the below URL-
https://docs.aws.amazon.com/apigateway/latest/developerguide/monitoring_overview.html