Correct answer - "You create a CloudWatch custom metric and build an alarm to scale your ASG" :
Here we need to scale on "number of requests per minute", which is a custom metric we need to
create, as it's not readily available in CloudWatch.
Incorrect answers:
"Attach an Elastic Load Balancer" - Not what you need for auto scaling. An Elastic Load Balancer
distributes workloads across multiple compute resources and checks your instances health status
to name a few, but it does not automatically increase and decrease the number of instances based
on the application requirement
"Attach additional Elastic File Storage" - This is a file storage service designed for
performance so not a solution
"You enable detailed monitoring and use that to scale your ASG" - The detailed monitoring metrics
won't provide information about database /application level request per minute, so here this
won't help