This code can be entered into an ecommerce website to get a  discount  on a product or service like free  shipping . Promo codes are a form of loyalty marketing strategy used by retailers to  encourage  customers to buy. In some ways they’ve  become  part of the furniture of the online customer journey. Promotional codes (also called coupon codes or promo codes) are alphanumeric strings that online stores offer to entice customers to make purchases. They’re usually associated with an overarching marketing strategy for that store. The discount applies to a specific product or even an entire order. It’s called “coupon code” and it represents a small window of opportunity to save money on your  purchase. How to apply? Many people want to know how to apply discount codes while online shopping. In this post, I’ll show you a few ways to get a discount when you use promo codes while shopping online. You may not realize you can use an online promo code the same way you use a regular coupon.