Canary passed, full rollout failed
A canary deploy looked healthy, so you promoted to 100% — and then it broke. Why might a healthy canary still fail at full rollout, and how do you respond?
What a strong answer looks like
Stop the bleeding first (mitigate), then form hypotheses from real signals. Separate root cause from symptom, communicate status as you go, and close with what prevents a repeat.
0:00 of about 20 min
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.
Run or narrate your approach, then ask the coach.