Customer service and customer relationship management are crucial for business success. Good customer service ensures brand loyalty through professionalism, patience, and putting people first. Customer relationship management is both a strategy to guide customer relationships and software to implement the strategy. It aims to make the customer experience smooth by automating responses, analyzing data, and tracking customer activity. Calculating customer lifetime value helps businesses understand which customers are most profitable to acquire and retain over the long run. Successful customer relationship strategies include building an omni-channel presence, automating support, using social media, targeting customers, and structuring the customer journey.