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.
You are designing a release pipeline that uses Azure App Service deployment slots. The pipeline must perform a swap after deployment to the staging slot. Which three tasks or actions should you include in the pipeline? (Select all that apply.)
Azure App Service manage: Start staging slot
Typically not needed as slots are auto-started, but it's a valid step if the slot is stopped.
Azure App Service manage: Delete staging slot
Why wrong: Deleting the staging slot is not part of the swap process.
Azure CLI: Run az webapp deployment slot swap
Why wrong: While this works, it's not a built-in task; the question expects Azure App Service tasks.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure App Service deploy: Deploy to staging slot
Option A is correct because the Azure App Service deploy task with the 'Deploy to staging slot' action is the standard method to deploy an application to a staging slot before a swap. This ensures the new release is validated in an isolated environment without affecting the production slot.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure App Service manage: Start staging slot
Why this is correct
Typically not needed as slots are auto-started, but it's a valid step if the slot is stopped.
Related concept
Read the scenario before looking for a memorised answer.
Azure App Service manage: Delete staging slot
Why it's wrong here
Deleting the staging slot is not part of the swap process.
Azure CLI: Run az webapp deployment slot swap
Why it's wrong here
While this works, it's not a built-in task; the question expects Azure App Service tasks.
Option-by-option analysis
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-400 exam frequently reuses these exact scenarios with slightly different constraints.
Why this is wrong here
Deleting the staging slot is not part of the swap process.
Why this is wrong here
While this works, it's not a built-in task; the question expects Azure App Service tasks.
Analysis generated from the official AZ-400blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
The trap here is that candidates may confuse the Azure CLI command (Option E) as a valid pipeline task, but Azure DevOps provides dedicated tasks (Azure App Service manage) that are simpler and more reliable for slot operations within a release pipeline.
Detailed technical explanation
Azure App Service deployment slots are live apps with their own hostnames and settings. The swap operation automatically handles warm-up, traffic routing, and configuration migration (e.g., connection strings marked as slot-specific). The 'Start staging slot' action (Option C) is often necessary to ensure the staging slot is running and healthy before the swap, as a stopped slot will cause the swap to fail.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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
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..
The correct answer is: Azure App Service deploy: Deploy to staging slot — Option A is correct because the Azure App Service deploy task with the 'Deploy to staging slot' action is the standard method to deploy an application to a staging slot before a swap. This ensures the new release is validated in an isolated environment without affecting the production slot.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This AZ-400 practice question is part of Courseiva's free Microsoft 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 AZ-400 exam.
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