Question 392 of 881
AZ-204 Develop Azure compute solutions Practice Question
A web app for a webhook processor needs separate staging and production environments. The team must warm up the new version before swapping traffic. Which App Service feature should be used?
⚠ Common exam trap
It's easy for candidates to confuse Always On with a warm-up mechanism, but Always On only prevents idle unload and does not provide environment separation or traffic swapping capabilities.
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
✓
Deployment slots
Deployment slots are the correct feature because they enable separate staging and production environments within the same App Service plan, allowing you to warm up the new version in a staging slot before performing a zero-downtime swap with the production slot. This directly supports the requirement for traffic swapping after warm-up, which is a core capability of slot-swapping in Azure App Service.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Deployment slots
Why this is correct
Deployment slots provide separate environments and support warm-up before swap.
- ✗
Backup and restore
Why it's wrong here
Backups protect app content but do not stage deployments.
- ✗
App Service access restrictions
Why it's wrong here
Access restrictions control network access and do not stage releases.
- ✗
Always On only
Why it's wrong here
Always On keeps apps warm but does not provide a separate staging environment.
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Last reviewed: Jun 11, 2026
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