Crucial Exams

Microsoft DevOps Engineer Expert AZ-400 Practice Question

You administer an Azure App Service web app that processes millions of real-time purchase requests each day. Deployment of a new build must meet the following requirements:

  • The build must be validated under the same compute resources and connection strings that are used in production before any customer traffic is routed to it.
  • No user-perceived downtime or cold-start latency is acceptable during the rollout.
  • If a critical bug is detected after the rollout starts, rollback must finish in less than 10 seconds.

Which deployment approach should you use to satisfy all of the requirements?

  • Create a new App Service plan in the same region, deploy the build there, and update the application's public DNS record to the new plan's endpoint.

  • Perform an in-place deployment directly to the production slot and rely on the App Service automatic restart behavior for availability.

  • Configure a rolling upgrade that sequentially removes instances from the load balancer, deploys the build, and adds the instances back.

  • Deploy the build to a staging deployment slot, warm it up, and perform a Swap with preview, reversing the swap if a fault is found.

Microsoft DevOps Engineer Expert AZ-400
Design and implement build and release pipelines
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