Business to business, also called B to B or B2B, is a form of transaction between businesses, such as one involving a manufacturer and wholesaler, or a wholesaler and a retailer. Business to business refers to business that is conducted between companies, rather than between a company and individual consumers.
Business to consumer (B2C) refers to the transactions conducted directly between a company and consumers who are the end-users of its products or services. The business to consumer as a business model differs significantly from the business-to-business model, which refers to commerce between two or more businesses.
C2A examples include applications such as e-democracy. a-voting, information about public services and e-health. Using such services consumers can post concerns, request feedback, or information (on planning application progress) directly from their local governments/ authorities.
C2C, or customer-to-customer, or consumer-to-consumer, is a business model that facilitates the transaction of products or services between customers. It is one of four categories of e-commerce, along with B2B (business to business), C2B (customer to business) and B2C (business to customer).