Assess students' ability to analyze strategic interactions and welfare implications in two-sided digital platforms with cross-side network effects, multi-homing, pricing/subsidy strategies, and exclusive contracts; tasks include deriving equilibrium prices and participation levels under monopoly and competitive platforms, performing comparative statics for fees and subsidies, evaluating how multi-homing and exclusivity affect consumer surplus, platform profits, and total welfare, and formulating policy recommendations (e.g., antitrust/remedies) supported by formal models and economic reasoning.