Actors
Brand
The consumer-facing identity that owns the relationship with the buyer. Different from the seller and different from the carrier: a brand is what the customer thinks they bought from, regardless of who picked, packed, or drove the delivery. Nash treats brand surfaces (tracking pages, notifications) as merchant-controlled, not carrier-controlled.
Where this fits
The people, brands, and counterparties Nash coordinates across. Operators set the rules, dispatchers run the live loop, drivers move the order, and merchants own the promise the customer paid for. Every actor sees the surface designed for their role.