In terms of time to execute the order to delivery,the contemporary responsive system is substantially faster than the traditional build-to-order manufacturing. It is becoming common practice to replenish retail store inventories of consumer products on a daily basis.Custom-built automobiles are being promised for delivery within 10 working days,with the goal to even further reduce the order-to-delivery cycle.Such compressed order-to-delivery cycles were not even imaginable a few years ago.