Abstract: A method including simulating future stock data and future order data of an item supplied by a distribution center, optimizing, based on the simulated future stock data and the simulated future order data, a maximum quantity of the item allowed to be fulfilled by the distribution center over time, receiving notification of an order request by a customer for a requested quantity of the item supplied by a distribution center for a target delivery date, determining whether the requested quantity exceeds the maximum quantity that is optimized for the target delivery date, upon determining that the requested quantity exceeds the maximum quantity that is optimized for the target delivery date, calculating an extended delivery plan for fulfilling the order request using the simulated fulfillment, and adjusting an action for fulfilling the order request based on the extended delivery plan.