This document lists and provides examples of different types of business models including: Business-to-Business (B2B), Business-to-Consumer (B2C), E-tailing, Business-to-Business-to-Consumer (B2B2C), Consumer-to-Consumer (C2C), Peer-to-Peer (P2P), Business-to-Employees (B2E), Exchange-to-Exchange (E2E), and E-government. The document is authored by Alan Hidalgo Murillo and is related to electronic commerce systems.