Case 23
The Drift Alarm Nobody Owned
Open the file, inspect the artifacts, and decide what the evidence can support before the replay appears.
Case intake
The Drift Alarm Nobody Owned
A logistics platform uses RouteTime v4 to estimate delivery ETAs, trigger customer delay notices, resequence driver stops, and set warehouse cutoff promises. The model has been live for nine months. A monitoring dashboard now shows feature drift and calibration decay after a carrier-routing change, but aggregate on-time delivery is still inside the executive SLA.
You are reviewing the model incident. Decide whether the alarm should be closed, whether retraining is enough, and what operational response should happen before peak week.
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If aggregate SLA hasn't breached, can we mark the drift alert as a known issue until peak week is over? I don't want the dashboard spooking support and ops.
Evidence board
Work the scene
Inspect artifacts in any order. Sort what each one does, cite the few you would rely on, then assemble a final judgment with confidence.