Economic and social activity facilitated by digital platforms that are typically online matchmakers or technology frameworks. Beyond examples like Amazon, Airbnb, Uber or Baidu, we dive into innovation & startup platforms, which provides a common technology framework upon which others can build, such as the many independent developers. Topics: - A fundamental change in business logic - Basics of platform economy - Value of data - Connecting themes - Platform economy business models - Case: Startup Commons - Designing platform economy business models