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SAA-C03 · Question #378

A solutions architect creates an Auto Scaling group for a memory-intensive application. The solutions architect wants to scale up and scale down based on memory usage. Which solution will meet this…

The correct answer is B. Install and configure the Amazon CloudWatch agent. Create a target tracking policy to scale. The Amazon CloudWatch agent is required to collect memory utilization metrics (as memory metrics are not reported by default). A target tracking policy is the simplest and most effective way to scale based on a custom metric such as mem_used_percent.

Submitted by noor.lb· Mar 4, 2026Design High-Performing Architectures

Question

A solutions architect creates an Auto Scaling group for a memory-intensive application. The solutions architect wants to scale up and scale down based on memory usage. Which solution will meet this requirement?

Options

  • AInstall and configure the AWS Systems Manager Agent (SSM Agent). Create a step scaling policy
  • BInstall and configure the Amazon CloudWatch agent. Create a target tracking policy to scale
  • CInstall and configure the AWS Systems Manager Agent (SSM Agent). Create a target tracking
  • DInstall and configure the Amazon CloudWatch agent. Create a scheduled scaling policy to scale

How the community answered

(19 responses)
  • A
    16% (3)
  • B
    74% (14)
  • C
    5% (1)
  • D
    5% (1)

Explanation

The Amazon CloudWatch agent is required to collect memory utilization metrics (as memory metrics are not reported by default). A target tracking policy is the simplest and most effective way to scale based on a custom metric such as mem_used_percent.

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