Categories of E-Commerce

1. Business-to-consumer (B2C) occurs when businesses sell finished products or services to individual consumers.
2. Business-to-business (B2B) occurs when businesses sell unfinished materials, products, or services to other businesses.
3. Consumer-to-consumer (C2C) occurs when individuals buy and sell items among themselves.  Online auctions such as eBay would be perfect examples.
4. Business-to-government (B2G) includes business transactions with government agencies.  Businesses pay taxes, file reports, or sell goods and services to government agencies.
5. government-to-government (G2G).  This includes transactions between one government agency and another.