Quick Answer
The answer is Amazon DynamoDB, the fully managed database for microservices that eliminates operational overhead by handling server provisioning, patching, and replication automatically. For a microservices architecture on Amazon ECS where each service requires its own database, DynamoDB’s serverless, NoSQL design allows you to create isolated tables with single-digit millisecond latency at any scale, removing the need to manage database instances or clusters. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your ability to match workload patterns to the right managed service—specifically, recognizing that microservices with independent, often small datasets benefit from DynamoDB’s pay-per-request model and zero administration, whereas RDS or Aurora would introduce unnecessary instance management and cost overhead. A common trap is choosing Aurora because it is “managed,” but DynamoDB is the only fully managed database that requires no server management at all. Memory tip: think “microservices need micro-management-free databases”—DynamoDB’s serverless nature means you never touch a server.
This DBS-C01 practice question tests your understanding of deployment and migration. 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 deploying a new microservices application on Amazon ECS. Each microservice needs its own database. Which AWS database service should be used to minimize operational overhead?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Amazon DynamoDB
DynamoDB is fully managed, serverless, and suitable for microservices.
Amazon Aurora
Why wrong: Aurora is managed but still requires instance management.
Amazon Redshift
Why wrong: Redshift is for data warehousing, not for microservices databases.
Amazon RDS for MySQL
Why wrong: RDS requires instance provisioning and management.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon DynamoDB
Amazon DynamoDB is a fully managed NoSQL database that requires no server management. Option A is incorrect because RDS requires provisioning and managing instances. Option B is incorrect because Aurora is also managed but may be overkill for small datasets. Option D is incorrect because Redshift is a data warehouse.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon DynamoDB
Why this is correct
DynamoDB is fully managed, serverless, and suitable for microservices.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Amazon Aurora
Why it's wrong here
Aurora is managed but still requires instance management.
Amazon Redshift
Why it's wrong here
Redshift is for data warehousing, not for microservices databases.
Amazon RDS for MySQL
Why it's wrong here
RDS requires instance provisioning and management.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Deployment and Migration — This question tests Deployment and Migration — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon DynamoDB — Amazon DynamoDB is a fully managed NoSQL database that requires no server management. Option A is incorrect because RDS requires provisioning and managing instances. Option B is incorrect because Aurora is also managed but may be overkill for small datasets. Option D is incorrect because Redshift is a data warehouse.
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.
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