This document discusses key concepts related to digital economy and e-commerce including different types of e-commerce models (B2B, B2C, C2C), infrastructure requirements (websites, internet protocols, internet service providers), online payment methods (digital wallets, online banking, e-money), security issues (denial of service attacks, spoofing), and standards/protocols (HTML, SSL, SET). It also lists examples of business and banking websites in the Middle East and North Africa region.