AWS Certified Cloud Practitioner — Question 666

Which feature of AWS Auto Scaling will forecast future traffic to schedule changes in the number of Amazon EC2 instances at the appropriate times?

Answer options

• A. Scheduled scaling
• B. Predictive scaling
• C. Target tracking scaling
• D. Step scaling

Correct answer: B

Explanation

Predictive scaling utilizes machine learning to analyze historical traffic patterns and forecast future load, allowing AWS Auto Scaling to provision Amazon EC2 instances proactively. In contrast, scheduled scaling adjusts capacity based on a predefined calendar schedule rather than dynamic forecasts. Target tracking and step scaling are reactive mechanisms that respond to real-time CloudWatch metric thresholds rather than predicting future traffic.