Definition: B2C (a.k.a. Business-to-Consumer) refers to a type of online market in which products and services are sold directly to the customer.
There are innumerable B2C websites on the Internet, including popular eCommerce sites such as Amazon, eBay, and Shopzilla. But mostly, all eCommerce websites are considered B2C if they sell products to individuals online.
See also B2B.