- A
AWS Cloud Map
AWS Cloud Map provides service discovery for resources like ECS tasks.
- B
Elastic Load Balancing
Why wrong: ELB provides load balancing but not service discovery.
- C
Amazon ECS service discovery
Why wrong: ECS itself does not have built-in service discovery; Cloud Map is used.
- D
Amazon Route 53
Why wrong: Route 53 can be used but requires manual updates for dynamic services.
Question 569 of 1,616
ECS Service Discovery with AWS Cloud Map
This DVA-C02 practice question tests your understanding of development with aws services. 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 developer is designing a microservices architecture where each service runs in its own Amazon ECS container. Services need to communicate with each other. The developer wants to simplify service discovery and load balancing. Which AWS service should the developer use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Cloud Map
AWS Cloud Map is the correct choice because it provides a fully managed service discovery solution that allows microservices to dynamically discover each other using DNS or HTTP API calls. It integrates natively with Amazon ECS, enabling services to register themselves and resolve other services by logical names, which simplifies service discovery and load balancing across containers.
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.
- ✓
AWS Cloud Map
Why this is correct
AWS Cloud Map provides service discovery for resources like ECS tasks.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Elastic Load Balancing
Why it's wrong here
ELB provides load balancing but not service discovery.
- ✗
Amazon ECS service discovery
Why it's wrong here
ECS itself does not have built-in service discovery; Cloud Map is used.
- ✗
Amazon Route 53
Why it's wrong here
Route 53 can be used but requires manual updates for dynamic services.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the ECS service discovery feature (which is just a configuration option) with a standalone AWS service, leading them to pick option C instead of recognizing that AWS Cloud Map is the underlying service that actually provides the discovery mechanism.
Detailed technical explanation
How to think about this question
AWS Cloud Map uses a combination of DNS (A, AAAA, SRV records) and HTTP APIs to enable service discovery, with health checks that automatically remove unhealthy instances. It supports both public and private namespaces, and when integrated with ECS, it can automatically register each task as a service instance using the ECS service discovery configuration, allowing services to resolve each other via DNS queries like `my-service.my-namespace`. This is particularly useful in microservices architectures where containers are ephemeral and IP addresses change frequently.
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.
Visual reference
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Cloud Map — AWS Cloud Map is the correct choice because it provides a fully managed service discovery solution that allows microservices to dynamically discover each other using DNS or HTTP API calls. It integrates natively with Amazon ECS, enabling services to register themselves and resolve other services by logical names, which simplifies service discovery and load balancing across containers.
What should I do if I get this DVA-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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Last reviewed: Jul 4, 2026
This DVA-C02 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 DVA-C02 exam.
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