In ECommerce Store, Coupon code or a promo code means it is a computer-generated code, a combination of letters or numbers that Customers can use into the promotional box of a check-out page to get a discount on their purchase.
Coupon code is a way to force your customers to buy your product. It will increase your sales and encourage your repetitive buyers and visitors.
Use your offers and coupons strategies in educating people to buy online. Create your own formulas to force customers to buy online like offering free shipping.