A company deploys its application on Amazon EC2 instances. The application occasionally experiences sudden increases in demand. The company wants to ensure that its application can respond to…

Question

Options

• AAWS Auto Scaling
• BAWS Compute Optimizer
• CAWS Cost Explorer
• DAWS Well-Architected Framework

• A
  89% (48)
• B
  7% (4)
• C
  2% (1)
• D
  2% (1)

Explanation

AWS Auto Scaling automatically adjusts the number of EC2 instances based on real-time demand, scaling out when traffic spikes and scaling in when demand drops - ensuring the application stays responsive while only paying for capacity actually needed.

Why the distractors are wrong:

• B. AWS Compute Optimizer analyzes existing resource usage and recommends right-sizing, but it doesn't dynamically respond to demand changes in real time.
• C. AWS Cost Explorer is a cost visualization and analysis tool - it shows you where money is being spent, not how to automatically adjust capacity.
• D. AWS Well-Architected Framework is a set of best-practice guidelines for reviewing architectures - a framework, not an operational service that acts on demand.

Memory tip: Think of Auto Scaling as a thermostat - it constantly monitors a metric (like CPU usage) and automatically turns capacity "up or down" to maintain the right temperature (performance), cutting costs by never running more than you need.

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