- A
Use a GitHub App (e.g., Pull Request Assigner) to automatically assign reviewers based on file patterns. Create a GitHub Action that sends a message to Microsoft Teams via webhook when a pull request is opened. Set up a second GitHub Action that runs every hour and checks pull request age, sending an escalation to Teams if older than 4 hours.
Why wrong: Using a GitHub App for assignment is good, but the escalation action running every hour may not be efficient and could be replaced by a scheduled workflow.
- B
Use GitHub's built-in code owners feature to automatically request reviews based on file patterns. Create a GitHub Action that posts a notification to Microsoft Teams via webhook when a pull request is opened. For escalation, create a scheduled workflow (e.g., using cron) that runs every 30 minutes to identify pull requests older than 4 hours and sends an alert to Teams.
Code owners provides automatic assignment. The scheduled workflow provides timely escalation without excessive overhead.
- C
Configure GitHub branch protection rules to require pull request reviews. Create a Microsoft Teams webhook connector and add it to the repository to post notifications. Instruct team leads to manually tag reviewers based on file changes.
Why wrong: Manual assignment does not scale and may lead to delays; also, no escalation mechanism.
- D
Use a third-party service like PullRequest.com to manage code reviews. Configure GitHub Actions to send notifications to Teams. For escalation, use a GitHub Action that triggers on pull request review request and uses conditional logic to escalate after 4 hours.
Why wrong: Third-party service adds cost and complexity; the escalation action might not trigger if no review request is made.
AZ-400 Configure processes and communications Practice Question
This AZ-400 practice question tests your understanding of configure processes and communications. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 company uses GitHub Enterprise for source control and GitHub Actions for CI/CD. The development team is distributed across three time zones. You are designing a process to improve communication and collaboration for code reviews. The team currently uses email notifications for pull request reviews, which often get missed. You want to implement a more efficient system that integrates with Microsoft Teams and provides real-time updates. Additionally, you need to ensure that critical pull requests (e.g., those affecting production) are escalated if not reviewed within 4 hours. You also want to automatically assign reviewers based on the files changed. Which combination of actions should you take?
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 GitHub's built-in code owners feature to automatically request reviews based on file patterns. Create a GitHub Action that posts a notification to Microsoft Teams via webhook when a pull request is opened. For escalation, create a scheduled workflow (e.g., using cron) that runs every 30 minutes to identify pull requests older than 4 hours and sends an alert to Teams.
Option B is correct because it uses GitHub's built-in code owners feature for automatic reviewer assignment based on file patterns, which is native and requires no third-party app. It then uses a GitHub Action with a webhook to post real-time notifications to Microsoft Teams when a pull request is opened. For escalation, a scheduled workflow (cron) running every 30 minutes checks pull request age and sends an alert to Teams if older than 4 hours, meeting the real-time and escalation requirements without manual intervention.
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 GitHub App (e.g., Pull Request Assigner) to automatically assign reviewers based on file patterns. Create a GitHub Action that sends a message to Microsoft Teams via webhook when a pull request is opened. Set up a second GitHub Action that runs every hour and checks pull request age, sending an escalation to Teams if older than 4 hours.
Why it's wrong here
Using a GitHub App for assignment is good, but the escalation action running every hour may not be efficient and could be replaced by a scheduled workflow.
- ✓
Use GitHub's built-in code owners feature to automatically request reviews based on file patterns. Create a GitHub Action that posts a notification to Microsoft Teams via webhook when a pull request is opened. For escalation, create a scheduled workflow (e.g., using cron) that runs every 30 minutes to identify pull requests older than 4 hours and sends an alert to Teams.
Why this is correct
Code owners provides automatic assignment. The scheduled workflow provides timely escalation without excessive overhead.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure GitHub branch protection rules to require pull request reviews. Create a Microsoft Teams webhook connector and add it to the repository to post notifications. Instruct team leads to manually tag reviewers based on file changes.
Why it's wrong here
Manual assignment does not scale and may lead to delays; also, no escalation mechanism.
- ✗
Use a third-party service like PullRequest.com to manage code reviews. Configure GitHub Actions to send notifications to Teams. For escalation, use a GitHub Action that triggers on pull request review request and uses conditional logic to escalate after 4 hours.
Why it's wrong here
Third-party service adds cost and complexity; the escalation action might not trigger if no review request is made.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose Option A because it seems comprehensive, but they overlook that GitHub's built-in code owners feature is the recommended and simpler approach for automatic reviewer assignment, and that a scheduled workflow (cron) is necessary for time-based escalation rather than relying on event-driven triggers.
Detailed technical explanation
How to think about this question
GitHub's CODEOWNERS file uses a syntax similar to .gitignore to define file patterns and associated owners; when a pull request modifies a file matching a pattern, GitHub automatically requests a review from the listed owners. The scheduled workflow uses the `schedule` event with a cron expression (e.g., `*/30 * * * *`) to run every 30 minutes, and within the workflow, the `gh` CLI or GitHub API can query pull requests with `created:<4 hours` and `review:none` to identify stale PRs. Microsoft Teams webhooks use an incoming webhook connector that accepts a JSON payload with a simple message card, allowing real-time notifications without complex integration.
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
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FAQ
Questions learners often ask
What does this AZ-400 question test?
Configure processes and communications — This question tests Configure processes and communications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use GitHub's built-in code owners feature to automatically request reviews based on file patterns. Create a GitHub Action that posts a notification to Microsoft Teams via webhook when a pull request is opened. For escalation, create a scheduled workflow (e.g., using cron) that runs every 30 minutes to identify pull requests older than 4 hours and sends an alert to Teams. — Option B is correct because it uses GitHub's built-in code owners feature for automatic reviewer assignment based on file patterns, which is native and requires no third-party app. It then uses a GitHub Action with a webhook to post real-time notifications to Microsoft Teams when a pull request is opened. For escalation, a scheduled workflow (cron) running every 30 minutes checks pull request age and sends an alert to Teams if older than 4 hours, meeting the real-time and escalation requirements without manual intervention.
What should I do if I get this AZ-400 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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