You are planning to use Auto Scaling groups to maintain the performance of your web application. How would you ensure that the scaling activity has sufficient time to stabilize without executing another scaling action?

Answer options:

A.Modify the Instance User Data property with a timeout interval.
B.Increase the Auto Scaling Cooldown timer value.
C.Enable the Auto Scaling cross zone balancing feature.
D.Disable CloudWatch alarms till the application stabilizes.

Correct Answer – B
AWS Documentation mentions the following.
The Cooldown period is a configurable setting for your Auto Scaling group, ensuring that it doesn`t launch or terminate additional instances before the previous scaling activity takes effect. After the Auto Scaling group dynamically scales using a simple Scaling Policy, it waits for the Cooldown period to complete before resuming scaling activities.
For more information on Auto Scaling Cooldown, please visit the following URL-
https://docs.aws.amazon.com/autoscaling/ec2/userguide/Cooldown.html