In today’s digital economy, platforms have become pervasive, profoundly transforming the landscape of industries ranging from social media to e-commerce, payment systems, and operating systems. These platforms, acting as intermediaries in varied settings such as Booking.com, Amazon, iOS, and Tinder, facilitate complex interactions across business-to-business, business-to-consumer, and peer-to-peer environments. The success of platform markets is driven by multifaceted factors, including network effects, rapid technology diffusion, and significant user switching costs. Moreover, the emergence of platform markets has catalyzed the emergence of innovative business models and novel pricing strategies that have fundamentally altered competitive dynamics and reshaped relationships between firms and consumers. This course delves into these pivotal and contemporary issues, offering a rigorous analysis of the underlying principles that drive platform success and the strategic considerations essential for navigating this evolving digital landscape. Through a blend of theoretical foundations and practical insights, the course equips students to critically assess and influence the trajectory of digital markets.