The business of platforms : strategy in the age of digital competition, innovation, and power / Michael A. Cusumano, Annabelle Gawer, David B. Yoffie. - Cusumano, Michael A., 1954-; Gawer, Annabelle, 1969-; Yoffie, David B. (Harper Business, an imprint of HarperCollins Publishers, 2019)