This document discusses the link between logistics and customer service, with a focus on delivery service. It makes three key points: 1) Logistics helps create customer service advantages through place/distribution and secondary impacts on product and promotion. Effective delivery service is especially important. 2) Customer service involves pre-transactional, transactional, and post-transactional components. Transactional service focuses on order fulfillment and delivery factors like time, information, flexibility, inventory, and accuracy. 3) Segmenting customers allows companies to tailor delivery service and other aspects of customer service to meet different customer needs. This improves customer retention by developing loyal, long-term customers.