- A
Rolling deployment
Why wrong: Rolling deployment updates the existing environment by replacing instances in batches. It does not create a separate environment for partial traffic.
- B
Blue/green deployment
Blue/green deployment creates a separate environment (green) where the new version runs. Then you can perform a CNAME swap to route all traffic at once, or use Route 53 weighted routing to split traffic gradually.
- C
Immutable deployment
Why wrong: Immutable deployment launches a full set of new instances in a new Auto Scaling group alongside the old ones, then swaps. It does not easily allow partial traffic splitting without additional setup.
- D
All at once deployment
Why wrong: This updates all instances simultaneously, causing downtime and no gradual traffic shift.
DVA-C02 Deployment Practice Question
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. A key principle to apply: blue/green deployment creates a new, separate environment for the new application version.. 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 uses AWS Elastic Beanstalk to deploy a web application. The development team wants to test a new feature by routing a small percentage of traffic to a separate environment before fully rolling out. Which Elastic Beanstalk deployment strategy 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
Blue/green deployment
Blue/green deployment is the correct strategy because it allows you to route a small percentage of traffic to a separate environment (the 'green' environment) by swapping the CNAME record or using Elastic Beanstalk's environment URL swap feature. This enables testing the new feature with a subset of users before fully rolling out to the 'blue' environment, minimizing risk and enabling quick rollback if issues arise.
Key principle: Blue/green deployment creates a new, separate environment for the new application version.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Rolling deployment
Why it's wrong here
Rolling deployment updates the existing environment by replacing instances in batches. It does not create a separate environment for partial traffic.
- ✓
Blue/green deployment
Why this is correct
Blue/green deployment creates a separate environment (green) where the new version runs. Then you can perform a CNAME swap to route all traffic at once, or use Route 53 weighted routing to split traffic gradually.
Related concept
Blue/green deployment creates a new, separate environment for the new application version.
- ✗
Immutable deployment
Why it's wrong here
Immutable deployment launches a full set of new instances in a new Auto Scaling group alongside the old ones, then swaps. It does not easily allow partial traffic splitting without additional setup.
- ✗
All at once deployment
Why it's wrong here
This updates all instances simultaneously, causing downtime and no gradual traffic shift.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse rolling deployment with blue/green deployment, mistakenly thinking rolling deployment can route traffic to a separate environment, when in fact rolling deployment updates instances within the same environment and does not provide a separate testing environment for traffic routing.
Detailed technical explanation
How to think about this question
Under the hood, Elastic Beanstalk blue/green deployment works by creating a separate environment (e.g., 'myapp-green') with the new application version, then swapping the environment's CNAME record with the original environment (e.g., 'myapp-blue') using the Swap Environment URLs feature. This DNS-level swap is near-instantaneous and allows you to route traffic gradually by using weighted DNS routing (e.g., via Route 53) before the full swap, enabling canary testing. A real-world scenario is testing a new payment gateway with 5% of users by keeping both environments running and adjusting Route 53 weights, then swapping fully after validation.
KKey Concepts to Remember
- Blue/green deployment creates a new, separate environment for the new application version.
- It allows for zero-downtime deployment by swapping environments.
- Can be integrated with Route 53 weighted routing for gradual traffic shifting.
- Provides a rollback mechanism by reverting to the old 'blue' environment.
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
Blue/green deployment creates a new, separate environment for the new application version.
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. Blue/green deployment creates a new, separate environment for the new application version. 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.
Review blue/green deployment creates a new, separate environment for the new application version., then practise related DVA-C02 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Deployment — This question tests Deployment — Blue/green deployment creates a new, separate environment for the new application version..
What is the correct answer to this question?
The correct answer is: Blue/green deployment — Blue/green deployment is the correct strategy because it allows you to route a small percentage of traffic to a separate environment (the 'green' environment) by swapping the CNAME record or using Elastic Beanstalk's environment URL swap feature. This enables testing the new feature with a subset of users before fully rolling out to the 'blue' environment, minimizing risk and enabling quick rollback if issues arise.
What should I do if I get this DVA-C02 question wrong?
Review blue/green deployment creates a new, separate environment for the new application version., then practise related DVA-C02 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Blue/green deployment creates a new, separate environment for the new application version.
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Last reviewed: Jun 11, 2026
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