Discount vouchers are promotional tools that offer customers a reduction in price on products or services. They can be found in various forms, such as printed coupons, digital codes, or mobile app offers. Businesses use these vouchers to attract new customers, encourage repeat purchases, and boost sales during specific promotions or events. Customers can redeem discount vouchers at participating retailers or online stores. Typically, they must present the voucher at checkout or enter a code during the online purchasing process. Popular examples of discount vouchers include those from Groupon, RetailMeNot, and Coupons.com.