This course analyzes the economics behind the digital economy. The course examines a variety of topics, including (1) pricing and demand for digital goods, (2) two-sided markets and platform competition, (3) network effects and standard, (4) online reputation mechanisms, (5) digital payment systems and virtual currencies, (6) digitization and innovation, and (7) economics of artificial intelligence. Economic theories, especially those from information economics, would be used to analyze and explain phenomena observed in the digital economy.