Cross-selling is a sales technique that encourages customers to purchase additional products or services that complement their initial purchase. This can be done by offering related or complementary items that align with the customer's interests or needs. For example, when a customer is purchasing a smartphone, the retailer may cross-sell by suggesting compatible accessories like cases, screen protectors, or wireless chargers to enhance the functionality and protection of the device.
If customers are offered a more expensive or premium version of the product they are interested in, it is referred to as upselling.