A content loop cycles fixed-duration slots 1. Each slot hits a gate 2: SOV contracts reserve direct-sold; the rest auction via PBS. Auction must beat the slot window — overrun means burl never fires, no charge, wasted QPS 6. Context (weather, footfall) rides the bid request; DSPs shape by skipping low-value slots.
FIELD NOTES
- Won auction + slot overrun = burl never fires — no billing, lost QPS
- DSP creatives target 10/15/30s — odd durations shrink the bid pool