How does an online shopping cart work?
Behind the scenes, e-commerce shopping carts are more functional for sellers. They present background information about your products–like inventory and shipping options–in a way that’s easy to grasp for your customer. It also collects the information you (the seller) need to fulfill your customers’ purchase. This includes their payment details, billing address, shipping address, and additional preferences.
The customer’s side
Thinking about the steps a customer goes through when using a website’s shopping cart can help you understand how it works.
1. Adding products
The fundamental function of an online shopping cart is the ability to add products. Customers might search for your product via a search engine and land on a product page. Or they may search or browse products on your website.
All your products should have an Add to Cart button so your potential customers can keep track of interesting items. The simpler it is for someone to add a product to their cart, the better.
When a customer adds a product to their cart, they may not buy it right away, or at all. Sometimes customers use their cart for considering products—which leads us to step 2.
2. Reviewing the cart
Customers should have the opportunity to review their cart before making their purchase. They might decide they don’t want a particular item, or want a different quantity, size, or color. They should be able to make these adjustments seamlessly, without leaving the cart.
The cart review process provides an opportunity for upselling. You can offer cross-product promotions, suggest products that pair well with items in their cart, or offer upgrades to their current selections. For example, if a customer is purchasing a nighttime skin serum, a prompt can offer a discounted price if they pair that serum with a daytime facial lotion.
3. Completing the purchase
Your shopping cart software should calculate and display shipping, tax, and applied discounts.