What do Google, Snapchat, Tinder, Amazon and Uber have in common? All of them are platforms, representatives of a business model that has been bringing huge profits to its owners for the last 10 years. The essence of the platform is that it does not create a product, but an ecosystem with which it is easier to open a new business, and it is more convenient for the seller and the buyer to interact. Platforms have taken over the Internet: Facebook accounts for 25% of all visits to the global network, and Google provides almost 40% of Internet traffic. However, this scale has not yet been appreciated by everyone. The authors talk about what has changed in the structure of modern business, how it affects the work of companies and how entrepreneurs and leaders adapt and thrive in the new economic conditions.