The 4 C's of digital marketing are: Customer, communication, cost, and convenience. It is crucial to understand your customers' needs and wants. Costs are important as they allow you to determine your return on investment. Without knowing your costs, you cannot gauge the value you derive from it. Convenience pertains to the customer's experience and ensuring a seamless journey through the marketing funnel. Communication is the means through which your target audience receives the necessary information, precisely when they need it.