A company is designing a web application that will run on Amazon EC2 instances behind an Application Load Balancer (ALB). The application experiences unpredictable traffic spikes. Which service should be used to automatically add or remove EC2 instances based on CPU utilization?

Answer options:

AWS Elastic Beanstalk

Amazon EC2 Auto Scaling

AWS Systems Manager

Elastic Load Balancing

How to approach this question

Identify the service responsible for dynamically adjusting compute capacity.

Full Answer

B.Amazon EC2 Auto Scaling✓ Correct

Amazon EC2 Auto Scaling helps you maintain application availability and allows you to automatically add or remove EC2 instances according to conditions you define.

Common mistakes

Confusing the role of the Load Balancer (traffic distribution) with Auto Scaling (capacity management).

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