A company is running a web application on Amazon EC2 instances. The company wants the application's compute capacity to automatically adjust to meet customer demand.
Which AWS service or capability should the company use to meet this requirement?
B. AWS Auto Scaling
https://aws.amazon.com/autoscaling/faqs/
"AWS Auto Scaling is a new AWS service that helps you optimize the performance of your applications while lowering infrastructure costs by easily and safely scaling multiple AWS resources. It simplifies the scaling experience by allowing you to scale collections of related resources that support your application with just a few clicks. AWS Auto Scaling helps you configure consistent and congruent scaling policies across the full infrastructure stack backing your application. AWS Auto Scaling will automatically scale resources as needed to align to your selected scaling strategy, so you maintain performance and pay only for the resources you actually need."
The AWS service that can help the company automatically adjust compute capacity to meet customer demand is AWS Auto Scaling.
AWS Auto Scaling is a service that automatically adjusts the number of Amazon EC2 instances in an Auto Scaling group according to the scaling policies defined by the user. This enables the application to automatically scale out to handle increased traffic or scale in to reduce costs during low traffic periods.
Therefore, option B (AWS Auto Scaling) is the correct answer.
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