Video: Imagine a turntable but instead of a needle, you have a pizza sauce spout, and instead of a record, you have pizza crust spinning so the red sauce can cover every inch. Imagine no more. That's how pizzas get made at Costco. Workers put the dough on the turntable and the pizzas gets expertly covered in a controlled flow of sauce from the machines.
Costco sells warehouse loads of pizza so getting machines to deal with the demand is much more efficient than our puny pizza hands.