Every box on the sweep. Continuously.
The manual version of tracking is a morning ritual: a coordinator opens each carrier portal in turn, re-keys milestones into an Excel sheet, and hopes nothing moved since it saved. The desk replaces the ritual with a watch — polling carrier sources across ocean, air and express continuously, resolving each shipment the way freight is actually numbered (booking number, then BL, then container), and holding every milestone current from empty gate-out to empty return. Nothing depends on someone remembering to look.