This document discusses different types of e-commerce models and electronic payment methods. It describes B2B e-commerce which involves business to business transactions over the internet. B2C refers to businesses providing an online shopping environment for consumers. C2C allows for trading between consumers through sites like eBay. Payment methods discussed include credit cards, debit cards, e-money, smart cards, and electronic funds transfer. Websites for each e-commerce model and examples of each payment type are also provided.