B2C and B2B are two forms of commercial transactions. B2C, which stands for business-to-consumer, is a process for selling products directly to consumers. B2B, which stands for business-to-business, is a process for selling products or services to other businesses. The business systems that support B2B or B2C communications, transactions and sales administration differ in complexity, scope, scale and cost, so it is important that you implement the right system for your customers.