Whether Amazon or Alibaba, Spotify, Uber, Airbnb, Apple, or Facebook: The platform economy is changing businessto-consumer (B2C) markets at a rapid pace. Without owning a vehicle, an apartment, or a song themselves, platform providers have made the initiation of business contacts between providers and demanders of their business model. The intermediaries are now worth much more on the stock exchanges than global media groups, car manufacturers, or hotel chains. Thanks to strong brands, they are the first port of call for connected customers all over the world when they are looking for vacation accommodations, streaming music or movies, or simply want to shop. The most successful providers are characterized by digitally optimized order processing, simple and transparent payment processes, and intelligent data analyses, on the basis of which they can align their services and offers ever more precisely to customer needs and satisfy them optimally. In an increasingly digital society, the players of the platform economy are conquering one B2C industry after another. Even if there are critical tones, the openness of end consumers to the use of digital platforms is increasing. As centers of agglomeration on the Web, they are attracting not only customers but also more and more providers – further fueling the rapid growth of platforms.