The client is a US company (MNC) in Vietnam who provides innovative digital coupon management system. The soluton allows enterprise to manage a marketing campaign by defining a set of promotion coupons, distributing them to end-users via mobile application (iOS & Android) on the campaign activities. The system (CMS) support rich managerial capabilities of the entire coupon lifecycle, including coupon definition, distribute coupons to end-users, redeem coupon at stores, agenices, and report the status of the marketing campaign (e.g., statistic report on geographical locations, temporal information of coupon redemption, etc.) CUSTOMER