SERVER DEVICE AND METHOD FOR DETERMINING PROMOTION REWARD CONTENT TO BE GRANTED TO A CUSTOMER

A server according to an embodiment determines a reward based on a transaction. Promotion setting information includes, for each promotion for granting rewards to a customer: a condition under which the corresponding promotion is implemented, a reward content to be granted to the customer in connection with the corresponding promotion, and an application method indicating how the reward content is to be granted to the customer when the at least one condition of the corresponding promotion overlaps with the at least one condition of another promotion. A processor receives, from the POS device, transaction data corresponding to a transaction. The processor determines whether the transaction satisfies the stored condition for each promotion. When the transaction satisfies the condition for more than one promotion, the processor determines the total reward content based on the corresponding stored application method. The processor outputs reward information indicating the total reward content.