Which of the below mentioned CloudWatch endpoint URLs should the user use?

A user has configured an EC2 instance in the US-East-1a zone. The user has enabled detailed monitoring of the instance. The user is trying to get the data from CloudWatch using a CLI.

Which of the below mentioned CloudWatch endpoint URLs should the user use?
A . monitoring.us-east-1.amazonaws.com
B . monitoring.us-east-1-a.amazonaws.com
C . monitoring.us-east-1a.amazonaws.com
D . cloudwatch.us-east-1a.amazonaws.com

Answer: A

Explanation:

The CloudWatch resources are always region specific and they will have the end point as region specific. If the user is trying to access the metric in the US-East-1 region, the endpoint URL will be: monitoring.us-east- 1.amazonaws.com