Build an ETA Prediction Model for Zomato (Case Study)

Case Study: How would you go about building an ETA (estimated time of arrival) calculation model for Zomato deliveries? Approach: Frame as a regression problem. Discuss feature engineering (distance, historical delivery times on the route, time of day, day of week, weather, traffic/congestion signals, restaurant prep time, rider availability/load), model choice (gradient-boosted trees or a learned function combining physical distance/speed priors with ML corrections), evaluation (MAE/RMSE against actual delivery times, calibration of over/under-estimates), and operational concerns (retraining cadence as traffic patterns shift, handling cold-start areas/restaurants with little historical data, real-time feature availability).