B2B (business-to-business) and B2C (business-to-consumer) are two different business models that refer to the relationship between a company and its clients. B2B companies sell products or services to other businesses, while B2C companies sell products or services directly to consumers. B2B transactions are typically larger in scale and involve longer sales cycles, while B2C transactions are typically smaller and involve shorter sales cycles. B2B marketing focuses on building relationships and providing solutions to business clients, while B2C marketing focuses on creating emotional connections and satisfying individual consumer needs. Understanding the differences between B2B and B2C is essential for businesses to develop effective marketing strategies and sales processes.