Capacity
Tender
Offering a load to a carrier, who accepts or declines it before it becomes theirs. Freight and middle-mile operations tender down an ordered list, dedicated capacity first, then contracted, then spot, and each decline costs time. The last-mile equivalent is dispatch, which usually assigns rather than offers.
Where this fits
Capacity comes in many shapes. Internal drivers, contracted carriers, gig couriers, autonomous units. Nash treats them as one pool ranked by the rules you set so each order goes to the option that best matches its promise instead of a static default.