The paper considers the models of electronic commerce (Business-to-Business (B2B), Business-Consumer (B2C), Business-to-Government (B2G), Consumer-Government (C2G), Consumer-Consumer (C2C)), E2E (Exchange-Exchange), C2A (to-G) (Consumer-State, B2E-systems (Business Educational Organizations) .This classification allows to assess the structure of electronic commerce in the context of the subjects of operations. The paper also considers the problems and prospects of the market e-commerce.