A start-up firm has created a new distributed application using microservice architecture. A large number of services across multiple AWS regions are involved in this application. The Project Director wants to have an aggregated view of all connections between these services along with latency to benchmark application performance. Which of the following can be used to meet this requirement?

Answer options:

A.Enable AWS X-Ray & use Service Maps to view data for all regions.
B.Enable AWS X-Ray & use Service Maps which will capture data in each region & then correlate latency between AWS regions.
C.Enable AWS X-Ray & use Sampling to view data for all regions.
D.Enable AWS X-Ray & use Sampling to view data in each region & then correlate latency between AWS regions.

Correct Answer – A
AWS X-Ray Service maps can be used to create dependency trees between multiple services across multiple AWS regions. They also detect latency between these services which can help resolve performance issues. 
Option B is incorrect as Service Maps will display data for services across regions & not for individual regions.
Options C & D is incorrect as Sampling is the number of requests between application services, which AWS X-Ray gathers to create Service maps.
For more information on AWS X-Ray use cases, refer to the following URL-
https://aws.amazon.com/xray/features/