A curated collection of ten influential Harvard Business Review articles exploring the role of platforms and ecosystems in contemporary business strategy. Selected insights examine multisided markets, network effects, platform leadership, and strategic adaptations for firms competing in ecosystem-driven environments. Includes a bonus article by Feng Zhu and Marco Iansiti on why some platforms thrive and others do not, offering practical frameworks and conceptual clarity for managers navigating the shift from traditional industry competition to platform-based economic systems