Abstract: Provided are a server, a control method thereof, and a non-transitory computer readable storage medium having a computer program recorded thereon. That is, according to the present invention, when a purchase intension on a promotion product is recognized in advance through a prior walk-in process or even when the promotion product is recognized without having a walk-in process, a reward function such as a point accumulating function, a discount function, or a discount coupon providing function is provided based on promotion product information purchased by the terminal, so that an advertiser provides reward only when a customer who is a promotion target surely recognized the product of the advertiser and purchases the product or the customer recognizes the product after purchasing the product so that the advertising effect is confirmed and is maximized.