Dynamic pricing strategy involves adjusting prices in real-time based on customer behavior, market conditions, inventory level, or competitor pricing. Implementing this functionality in an online shopping cart requires pricing rules and algorithms based on real-time data collection.  For example, if competitor X raises the price of product Y, the algorithm increases the price of a corresponding item by a certain percentage.  This requires competitor price monitoring and customer segmentation to implement personalized pricing strategies that offer targeted discounts or promotions to specific customer segments.