How would you answer an interview scenario involving canary deployment?

In an interview, I would first define canary deployment and the problem it solves, then explain how I would choose representative traffic, define automated success and abort criteria, watch both technical and business metrics, increase traffic gradually, and keep rollback immediate. I would also call out the main failure mode: sending too little or nonrepresentative traffic to the canary can produce false confidence before the release reaches the workloads that trigger the defect. Finally, I would describe how I would test, monitor, and safely roll back or recover the solution.