You recently deployed your application in Google Kubernetes Engine (GKE) and now need to release a new version of the application. You need the ability to instantly roll back to the previous version o

Question

Options

• APerform a rolling deployment, and test your new application after the deployment is complete.
• BPerform A/B testing, and test your application periodically after the deployment is complete.
• CPerform a canary deployment, and test your new application periodically after the new version is
• DPerform a blue/green deployment, and test your new application after the deployment is

• A
  6% (3)
• B
  2% (1)
• C
  12% (6)
• D
  80% (40)

Explanation

Blue/green deployment maintains two identical environments: 'blue' (current live version) and 'green' (new version). Traffic is switched from blue to green all at once. If issues arise, you instantly redirect traffic back to blue - the old environment is still running and untouched. Rolling deployments gradually replace instances, making instant rollback difficult. Canary deployments expose only a subset of users to the new version, but rollback is slower. A/B testing splits traffic for comparison purposes, not for safe deployment with rollback.

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