Evaluating Workload Architecture with Well-Architected Tool

SCS-C03 By islever Editorial Last updated

Identify security gaps through architectural reviews and cost analysis.

Short answer

C Use the AWS Well-Architected Tool to define the workload, complete the security pillar questionnaire, and generate an improvement plan.

Question

A security analyst is reviewing a workload on AWS. The workload includes Amazon EC2 instances, Amazon RDS DB instances, and Amazon S3 buckets. The workload processes personally identifiable information (PII) data.
The security analyst needs to evaluate whether the workload architecture aligns with AWS security best practices and to identify potential security risks.
Which solution will meet these requirements?
  1. Use AWS Trusted Advisor to run all security checks across the workload components. Review the security recommendations. Export the findings to a CSV file for analysis.
  2. Enable Amazon Macie across all S3 buckets and RDS DB instances to discover and classify PII data. Generate privacy compliance reports and an improvement plan to compare to AWS best practices.
  3. Use the AWS Well-Architected Tool and define a workload. Complete the security pillar questionnaire. Generate an improvement plan based on the results of the questionnaire. Correct Answer
  4. Enable Amazon Inspector. Configure Amazon Inspector to use hybrid scanning mode. Evaluate the findings from Amazon Inspector against the AWS Well-Architected Framework security pillar.

Key Takeaways

This question tests the ability to distinguish between data classification services, vulnerability scanners, and architectural review tools when evaluating workload security.

The AWS Well-Architected Tool evaluates workload architecture against AWS security best practices and generates improvement plans, making it the correct choice for architectural risk identification.

Common mistake: Choosing B (Macie) because the workload processes PII, but Macie cannot scan RDS and does not evaluate overall architecture against best practices.

Expert Analysis

Architectural Evaluation Requirement The core requirement is to evaluate whether the workload architecture aligns with AWS security best practices and to identify potential security risks. This explicitly calls for an architectural review mechanism, not just a targeted data classification or vulnerability scan.

AWS Well-Architected Tool Option C uses the AWS Well-Architected Tool, which is specifically designed for this purpose. By defining the workload and completing the Security Pillar questionnaire, the tool evaluates the architecture against AWS best practices and generates an improvement plan to remediate identified risks.

Distractors and Limitations Option A (Trusted Advisor) provides account-level best practice checks but lacks the workload-specific architectural questionnaire and improvement plan generation. Option B (Macie) is a trap due to the mention of PII; Macie only scans S3 buckets, not RDS DB instances, and it classifies data rather than reviewing architecture. Option D (Amazon Inspector) scans for software vulnerabilities and unintended network accessibility in compute resources, but it does not evaluate overall architectural design against the Well-Architected Framework. As one comment noted, the PII reference is a distractor; the actual need is an architectural review, making C the correct choice.

Official Reference

https://docs.aws.amazon.com/wellarchitected/latest/userguide/welcome.html

This link opens the official vendor documentation in a new tab.

Exam Strategy

When a question asks to evaluate workload architecture or alignment with best practices, immediately look for the AWS Well-Architected Tool. Be cautious of distractors like PII (Macie) or vulnerabilities (Inspector) that address specific data or compute issues but fail to assess the overall architectural design.

Community Votes

C
77%
B
14%
A
9%

77% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 1 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 1

  1. c99a31b 👍 1 Answered C
    A tricky question-- most time when the question is about PII or sensitive data, Macie will be part of the answer. But the requirement does not mention PII or sensitive data! So B is out and C is the answer

Reader comments & corrections

No reader corrections yet — spotted an error or have a note? Share it below.

Log in to comment, report an error, or add a note about this question.

Practice All SCS-C03 Questions

Access 86 questions with complete answers and detailed explanations.

View Full SCS-C03 Practice Test →

← Back to SCS-C03 Study Guide