We are living in a "New Economy" with e-business. E-Business means not only "selling products electronically" but also digitalisation of many conventional business processes: financing, advertising, and managing human resources. These process-related changes significantly impact intra-business organisation, business-to-business relationships, and business-to-consumer interactions. As technology advances breathlessly, the ideas, concepts, and models of economic principles need to be applied carefully. The economic analyses, such as differential pricing, bundling, signalling, licensing, lock-in, or network effects can be directly applied to E-Business economy. This course aims to give students economic insights to understand E-Business and to make better decisions in E-Business.