| Serving mode | Batch daily |
| Inference cadence | 02:00 UTC, nightly |
| Artifact format | ONNX (churn-xgb-v2.onnx) |
| Infra | AWS Batch + S3 output |
| Prediction volume | ~42k customers/run |
| Output sink | Redshift predictions table |
| Monitor | Threshold | Alert |
|---|---|---|
| Input feature drift (PSI) | < 0.20 | Active |
| Prediction distribution shift | KL < 0.15 | Active |
| Batch job success | 100% | Active |
| High-LTV segment recall | ≥ 0.68 (alert) / ≥ 0.75 (gate) | Watchlist |
| Null rate in key features | < 2% | Active |