4Cs Marketing Theory (The Marketing Theory of 4Cs), also known as "4C Marketing Theory", was proposed by American marketing expert Professor Lauterbourg in 1990. 4C is Consumer, Cost, and Convenience ) And communication. The 4C theory emphasizes that companies should first put the pursuit of customer satisfaction first, followed by efforts to reduce customer purchase costs, and then pay full attention to the convenience of customers in the purchase process, rather than determine the sales channel strategy from the perspective of the enterprise, Finally, effective marketing communication should be implemented with consumers as the center