The answer is AWS Secrets Manager, the correct choice because it is purpose-built for securely storing, managing, and automatically rotating secrets like database credentials, API keys, and OAuth tokens, with native integration for automatic secret rotation with Amazon RDS. This service eliminates the need for custom rotation logic by handling credential lifecycle directly within the RDS integration, meeting the exact requirements for automated rotation and AWS service compatibility. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your ability to distinguish Secrets Manager from AWS Systems Manager Parameter Store, a common trap where Parameter Store lacks native automatic rotation; the exam often frames this scenario around compliance-driven rotation policies. A reliable memory tip is “Secrets rotate, Parameters store” — if the requirement includes automatic rotation and RDS integration, always choose Secrets Manager.
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is designing a new solution to securely store and manage secrets for applications running on AWS. The secrets include database credentials, API keys, and OAuth tokens. The solution must automatically rotate secrets and integrate with AWS services like Amazon RDS. Which AWS service should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Secrets Manager to store secrets and configure automatic rotation.
AWS Secrets Manager is purpose-built for securely storing, managing, and automatically rotating secrets such as database credentials, API keys, and OAuth tokens. It provides native integration with Amazon RDS, enabling automatic rotation of RDS credentials without custom code, which directly meets the requirements for automatic rotation and AWS service integration.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Store secrets in AWS Systems Manager Parameter Store with a SecureString parameter type.
Why it's wrong here
Parameter Store does not provide automatic secret rotation.
✗
Use AWS CloudHSM to store secrets as keys.
Why it's wrong here
CloudHSM is for HSM-based key management, not for secrets like credentials.
✗
Use AWS Key Management Service (KMS) to store secrets as encrypted data keys.
Why it's wrong here
KMS manages encryption keys, not secrets; Secrets Manager is the correct service.
✓
Use AWS Secrets Manager to store secrets and configure automatic rotation.
Why this is correct
Secrets Manager is purpose-built for secrets with rotation and native RDS integration.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Systems Manager Parameter Store (which can store secrets but lacks native rotation) with AWS Secrets Manager (which is designed specifically for automatic secret rotation and deep AWS service integration), leading them to choose Parameter Store for its lower cost and familiarity.
Detailed technical explanation
How to think about this question
AWS Secrets Manager uses a combination of KMS for encryption at rest and an internal database to store secret metadata and ciphertext. When automatic rotation is enabled for an RDS database, Secrets Manager invokes a built-in Lambda function that creates a new password, updates the RDS master user, and updates the secret version, all while maintaining a staging label system (AWSCURRENT, AWSPREVIOUS) to ensure application availability during rotation. The rotation schedule is defined by a cron expression and can be customized, but the default interval is 30 days.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Secrets Manager to store secrets and configure automatic rotation. — AWS Secrets Manager is purpose-built for securely storing, managing, and automatically rotating secrets such as database credentials, API keys, and OAuth tokens. It provides native integration with Amazon RDS, enabling automatic rotation of RDS credentials without custom code, which directly meets the requirements for automatic rotation and AWS service integration.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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