"Next Day" typically refers to a service or delivery option that guarantees items will arrive the day after an order is placed. This service is commonly used by online retailers and shipping companies to enhance customer satisfaction by providing quick and efficient delivery. Many businesses, such as Amazon and FedEx, offer "Next Day" shipping as a premium option, often for an additional fee. This service is particularly popular for urgent purchases, such as gifts or essential items, allowing customers to receive their orders promptly without waiting for standard shipping times.