- A
CodeDeployDefault.ECSAllAtOnce
Why wrong: Incorrect. `CodeDeployDefault.ECSAllAtOnce` shifts all traffic immediately, not in two stages.
- B
CodeDeployDefault.ECSLinear10PercentEvery1Minutes
Why wrong: Incorrect. `CodeDeployDefault.ECSLinear10PercentEvery1Minutes` shifts 10% every minute over 10 minutes, not a single 10% shift with a 5-minute hold.
- C
CodeDeployDefault.ECSCanary10Percent5Minutes
Correct. `CodeDeployDefault.ECSCanary10Percent5Minutes` shifts 10% of traffic, waits 5 minutes, then shifts the remaining 90%.
- D
Custom configuration with 10% initial traffic and 100% after 5-minute interval
Why wrong: Incorrect. While a custom configuration could achieve the same behavior, the built-in canary configuration already matches the requirement, so a custom one is unnecessary.
DOP-C02 Blue/Green Deployment Practice Question
This DOP-C02 practice question tests your understanding of sdlc automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. A key principle to apply: blue/Green Deployment. 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 DevOps team is implementing a blue/green deployment strategy for a microservice running on Amazon ECS with AWS CodeDeploy. They want to shift 10% of traffic to the new task set for 5 minutes, then shift the remaining 90%. Which deployment configuration should they 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
CodeDeployDefault.ECSCanary10Percent5Minutes
The built-in configuration `CodeDeployDefault.ECSCanary10Percent5Minutes` shifts 10% of traffic to the new task set, holds for 5 minutes, then shifts the remaining 90%. This matches the requirement exactly. A custom configuration (D) is unnecessary and not a standard deployment configuration.
Key principle: Blue/Green Deployment
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CodeDeployDefault.ECSAllAtOnce
Why it's wrong here
Incorrect. `CodeDeployDefault.ECSAllAtOnce` shifts all traffic immediately, not in two stages.
- ✗
CodeDeployDefault.ECSLinear10PercentEvery1Minutes
Why it's wrong here
Incorrect. `CodeDeployDefault.ECSLinear10PercentEvery1Minutes` shifts 10% every minute over 10 minutes, not a single 10% shift with a 5-minute hold.
- ✓
CodeDeployDefault.ECSCanary10Percent5Minutes
Why this is correct
Correct. `CodeDeployDefault.ECSCanary10Percent5Minutes` shifts 10% of traffic, waits 5 minutes, then shifts the remaining 90%.
Related concept
Blue/Green Deployment
- ✗
Custom configuration with 10% initial traffic and 100% after 5-minute interval
Why it's wrong here
Incorrect. While a custom configuration could achieve the same behavior, the built-in canary configuration already matches the requirement, so a custom one is unnecessary.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates often confuse the canary and linear configurations. `CodeDeployDefault.ECSCanary10Percent5Minutes` shifts 10% instantly and then holds for 5 minutes before shifting the rest. The linear configuration, `CodeDeployDefault.ECSLinear10PercentEvery1Minutes`, shifts 10% every minute over 10 minutes without a hold.
Detailed technical explanation
How to think about this question
In AWS CodeDeploy for ECS, a custom deployment configuration allows you to define the exact traffic percentages and intervals using the 'trafficRouting' configuration in the AppSpec file or via the AWS CLI. The built-in canary configurations (e.g., ECSCanary10Percent5Minutes) are designed for a single canary step followed by an automatic 100% shift, whereas a custom configuration can specify multiple steps with arbitrary percentages and wait times, such as 10% for 5 minutes and then 100% after that interval. This is critical for scenarios requiring precise traffic management, like gradual rollouts with manual validation or integration with external monitoring tools.
KKey Concepts to Remember
- Blue/Green Deployment
- CodeDeployDefault.ECSCanary10Percent5Minutes
- Traffic Shifting
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
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 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, then practise related DOP-C02 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
SDLC Automation — This question tests SDLC Automation — Blue/Green Deployment.
What is the correct answer to this question?
The correct answer is: CodeDeployDefault.ECSCanary10Percent5Minutes — The built-in configuration `CodeDeployDefault.ECSCanary10Percent5Minutes` shifts 10% of traffic to the new task set, holds for 5 minutes, then shifts the remaining 90%. This matches the requirement exactly. A custom configuration (D) is unnecessary and not a standard deployment configuration.
What should I do if I get this DOP-C02 question wrong?
Review blue/Green Deployment, then practise related DOP-C02 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Blue/Green Deployment
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Last reviewed: Jun 24, 2026
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