AZ-400 Practice Question: Design and implement build and release pipelines
This AZ-400 practice question tests your understanding of design and implement build and release pipelines. 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.
Your organization uses Azure Pipelines to deploy a web application to multiple Azure App Service instances across regions. You need to implement a deployment strategy that allows rolling back to the previous version quickly if issues are detected. Which TWO strategies should you recommend?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use blue-green deployment with a traffic manager endpoint.
Option A and Option D are correct. Slot swap allows swapping back to the previous slot. Blue-green deployment with a traffic manager allows switching traffic. Option B is wrong because redeployment takes time. Option C is wrong because canary is for gradual rollout, not instant rollback. Option E is wrong because it doesn't address rollback.
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 rolling update with incremental deployment.
Why it's wrong here
Rolling updates do not provide instant rollback.
✗
Implement a canary deployment with traffic splitting.
Why it's wrong here
Canary is for gradual rollout, not quick rollback.
✗
Store previous deployment artifacts in Azure Blob Storage.
Why it's wrong here
Storing artifacts does not enable quick rollback.
✓
Use blue-green deployment with a traffic manager endpoint.
Why this is correct
Blue-green allows switching traffic back to the previous environment.
Related concept
Read the scenario before looking for a memorised answer.
✓
Deploy to a staging slot and then swap with production.
Why this is correct
Swapping back reverts to the previous version.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-400 question in full detail.
Identify which AZ-400 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.
Design and implement build and release pipelines — This question tests Design and implement build and release pipelines — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use blue-green deployment with a traffic manager endpoint. — Option A and Option D are correct. Slot swap allows swapping back to the previous slot. Blue-green deployment with a traffic manager allows switching traffic. Option B is wrong because redeployment takes time. Option C is wrong because canary is for gradual rollout, not instant rollback. Option E is wrong because it doesn't address rollback.
What should I do if I get this AZ-400 question wrong?
Identify which AZ-400 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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