Customer retention is crucial for retailers since it increases profitability while saving on marketing and customer acquisition costs. “Retention” originates from “retain,” meaning to keep. Therefore, incorporating customer retention trends aims to maintain or preserve existing customers. However, the specific goals and approaches to retaining customers differ across industries. For instance, a high-end healthcare company would employ different strategies than an e-commerce store. Nonetheless, the underlying concept is consistently delivering a high-quality service that fosters customer loyalty and encourages repeat business. The ultimate aim is to achieve an optimized level of customer retention.