This chapter explains how digital marketing supported by integrated CRM systems has become essential as customer behavior shifts toward digital-first communication. Modern buyers expect to easily find businesses online, receive relevant information, and communicate through email, text, and connected channels. The key is not sending the same message to everyone, but using precise customer data segmentation to deliver timely and relevant follow-up. When CRM, communication tools, and automation work together, businesses can improve opportunity follow-up, increase quote conversion, and drive repeat purchases while building stronger customer relationships with minimal extra effort.