An application hosted on EC2 Instances has its promotional campaign due to start in 2 weeks. The performance team performs some analysis based on the historical data and informs you the number of instances that are required for the campaign. You need to make sure that the Auto Scaling group is properly configured with the provided number of instances. What should be done to fulfill this requirement?

Answer options:

A.Migrate the application from the Auto Scaling group to a Lambda function so that the application scales automatically by AWS.
B.Configure Scheduled scaling in the Auto Scaling Group.
C.Configure a Lambda function that scales up the ASG when the activity starts and scales down when the activity ends.
D.Configure Static scaling for the Auto Scaling Group.

Correct Answer – B
In the question, the promotional campaign will start in 2 weeks. As you already know how many instances are required, you can configure a scaling schedule in the Auto Scaling group to plan the scaling actions.
Option A is incorrect because it is unsuitable to migrate the application to a Lambda function since the campaign will start in 2 weeks. You can configure an Auto Scaling policy for the campaign.
Option C is incorrect because it is easier to use an Auto Scaling policy to achieve this requirement.
Option D is incorrect because there is no static scaling policy in an Auto Scaling group.
For more information on Scheduled Scaling, please visit the following URLs:
https://docs.aws.amazon.com/autoscaling/ec2/userguide/schedule_time.html