Cross-selling is a sales technique where a seller encourages a customer to purchase additional products or services that complement their original choice. For example, if a customer buys a laptop, the seller might suggest a laptop case or software that enhances the laptop's functionality. This strategy aims to increase the overall value of the sale and improve customer satisfaction by providing relevant options. Businesses often use cross-selling to boost revenue and strengthen customer relationships. By understanding customer needs and preferences, companies can recommend products that align with their interests. This approach not only benefits the business but also helps customers discover useful items they may not have considered.