Vouchers are an important tool for merchants to acquire new customers, retain existing customers, shift excess stock, and measure campaign responses. While some merchants avoid vouchers due to perceptions of bargain hunting customers or exclusivity, vouchers have become increasingly popular with cost-conscious shoppers. Both merchants and affiliates face issues with vouchers, including margin retention, brand perception, technical errors, overlapping promotions, and customer complaints. To address these issues, merchants should implement clear terms and conditions, improve technical integration, analyze customer behavior, and specify commission structures for affiliates. Affiliates should respect exclusivity, terms and conditions, and accurately promote vouchers. Increased monitoring, exclusive offers, mobile integration, and technical solutions from networks are improving