Which of the following services can be used to detect the application health in a Blue Green deployment in AWS.

Answer options:

A.AWS Code Commit
B.AWS Code Pipeline
C.AWS CloudTrail
D.AWS Cloudwatch

Answer - D
The AWS Documentation mentions the following
Amazon CloudWatch is a monitoring service for AWS Cloud resources and the applications you run on AWS.9 CloudWatch can collect and track metrics, collect and monitor log files, and set alarms. It provides system-wide visibility into resource utilization, application performance, and operational health, which are key to early detection of application health in blue/green deployments.
For more information on Blue Green deployments, please refer to the below link:
https://d0.awsstatic.com/whitepapers/AWS_Blue_Green_Deployments.pdf