Question 1,054 of 1,546
Deployment, Provisioning, and AutomationeasyMultiple SelectObjective-mapped

CodeDeploy Best Practices: Blue/Green Deployment and Automatic Rollback | AWS SysOps Associate

This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. 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.

Which TWO options are best practices for automating deployments using AWS CodeDeploy? (Choose two.)

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

  • Clue: "best"

    Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

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

Use a blue/green deployment strategy

Option B is correct because a blue/green deployment strategy minimizes downtime and risk by running two identical environments (blue for current, green for new) and shifting traffic after validation. This approach allows instant rollback by switching traffic back to the blue environment if issues arise, making it a best practice for critical production deployments.

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.

  • Use a single deployment group for all environments

    Why it's wrong here

    Separate deployment groups for different environments are recommended.

  • Use a blue/green deployment strategy

    Why this is correct

    Blue/green reduces downtime and risk.

    Clue confirmation

    The clue word "best" in the question point toward this answer.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Deploy to all instances simultaneously

    Why it's wrong here

    This increases risk; canary or rolling deployments are better.

  • Configure automatic rollback in case of deployment failure

    Why this is correct

    Automatic rollback minimizes impact of failed deployments.

    Clue confirmation

    The clue word "best" in the question point toward this answer.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Require manual approval for every deployment

    Why it's wrong here

    Manual approval slows down automation.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse 'automating deployments' with 'eliminating all manual steps,' leading them to select Option E (manual approval for every deployment) as a safety measure, when in fact AWS CodeDeploy's automatic rollback and blue/green strategies provide safer automation without requiring human intervention for every change.

Detailed technical explanation

How to think about this question

AWS CodeDeploy blue/green deployments use an Elastic Load Balancer (ELB) or Amazon Route 53 to shift traffic from the original environment to the replacement environment. Under the hood, CodeDeploy creates a new Auto Scaling group for the green fleet, installs the revision, and then reroutes traffic based on a configurable 'traffic shifting' schedule (e.g., linear or canary). A real-world scenario: during a critical patch, if the green fleet fails health checks, CodeDeploy automatically stops traffic shifting and can trigger a rollback to the blue fleet, preserving availability.

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.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Use a blue/green deployment strategy — Option B is correct because a blue/green deployment strategy minimizes downtime and risk by running two identical environments (blue for current, green for new) and shifting traffic after validation. This approach allows instant rollback by switching traffic back to the blue environment if issues arise, making it a best practice for critical production deployments.

What should I do if I get this SOA-C02 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

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

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This SOA-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 SOA-C02 exam.