- A
Create an Elastic Load Balancer to route traffic between the blue and green environments.
ELB is required for traffic shifting.
- B
Use an Amazon Route 53 weighted routing policy to gradually shift traffic.
Why wrong: Not a standard CodeDeploy strategy.
- C
Configure an AWS Lambda function to perform A/B testing during deployment.
Why wrong: Not a deployment strategy.
- D
Use an Amazon CloudFront distribution with multiple origins.
Why wrong: Overkill and not typical.
- E
Ensure the new instances are registered with the target group before switching traffic.
Required for blue/green.
Question 1,009 of 1,616
How to Perform a Blue/Green Deployment with AWS CodeDeploy
This DVA-C02 practice question tests your understanding of deployment. 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 critical application using AWS CodeDeploy. To minimize downtime, they want to perform a blue/green deployment. Which TWO strategies should they implement?
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.
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
✓
Create an Elastic Load Balancer to route traffic between the blue and green environments.
Blue/green deployments with AWS CodeDeploy involve two environments: the current (blue) and the new (green). To minimize downtime, traffic must be seamlessly switched from blue to green. This is achieved by using an Elastic Load Balancer (ELB) to route traffic between the environments (option A). Additionally, the new instances must be registered with the target group before traffic is switched (option E). Option B (Route53 weighted routing) is not the primary mechanism; CodeDeploy leverages the ELB for traffic shifting. Option C (Lambda for A/B testing) is unrelated to blue/green deployment. Option D (CloudFront with multiple origins) can be used but is not a required strategy for CodeDeploy blue/green; it is more relevant for content delivery. Therefore, the correct strategies are A and E.
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.
- ✓
Create an Elastic Load Balancer to route traffic between the blue and green environments.
Why this is correct
ELB is required for traffic shifting.
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.
- ✗
Use an Amazon Route 53 weighted routing policy to gradually shift traffic.
Why it's wrong here
Not a standard CodeDeploy strategy.
- ✗
Configure an AWS Lambda function to perform A/B testing during deployment.
Why it's wrong here
Not a deployment strategy.
- ✗
Use an Amazon CloudFront distribution with multiple origins.
Why it's wrong here
Overkill and not typical.
- ✓
Ensure the new instances are registered with the target group before switching traffic.
Why this is correct
Required for blue/green.
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which DVA-C02 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
Questions learners often ask
What does this DVA-C02 question test?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an Elastic Load Balancer to route traffic between the blue and green environments. — Blue/green deployments with AWS CodeDeploy involve two environments: the current (blue) and the new (green). To minimize downtime, traffic must be seamlessly switched from blue to green. This is achieved by using an Elastic Load Balancer (ELB) to route traffic between the environments (option A). Additionally, the new instances must be registered with the target group before traffic is switched (option E). Option B (Route53 weighted routing) is not the primary mechanism; CodeDeploy leverages the ELB for traffic shifting. Option C (Lambda for A/B testing) is unrelated to blue/green deployment. Option D (CloudFront with multiple origins) can be used but is not a required strategy for CodeDeploy blue/green; it is more relevant for content delivery. Therefore, the correct strategies are A and E.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-C02 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.
Are there clue words in this question I should notice?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 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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