A user is using the AWS EC2. The user wants to make so that when there is an issue in the EC2 server, such
as instance status failed, it should start a new instance in the user’s private cloud. Which AWS service helps to
achieve this automation?

A.
AWS CloudWatch + Cloudformation

B.
AWS CloudWatch + AWS AutoScaling + AWS ELB

C.
AWS CloudWatch + AWS VPC

D.
AWS CloudWatch + AWS SNS

Explanation:
Amazon SNS can deliver notifications by SMS text message or email to the Amazon Simple Queue Service
(SQS) queues or to any HTTP endpoint. The user can configure a web service (HTTP End point|) in his data
center which receives data and launches an instance in the private cloud. The user should configure the
CloudWatch alarm to send a notification to SNS when the “StatusCheckFailed” metric is true for the EC2
instance. The SNS topic can be configured to send a notification to the user’s HTTP end point which launches
an instance in the private cloud.