Electronic Commerce Design If having a Mobile App is turning out to be a standard for every business nowadays, imagine having a site that allows your customers to buy your products no matter where they were. E- commerce opens up a whole new way of reaching out to your customers 24/7. The shopping cart is a key element to e-commerce, it serves as the interface between the company’s website and whatever merchandise the site offers. Similar to the experience of buying at a store, your shopping cart will store whatever products you might add to your order for later review, modification or to proceed to purchase.