Introduction. The relevance of this study stems from the growth of international e-commerce, the tightening of antitrust requirements, and the need for companies to promptly adapt their internal control systems to comply with laws across different countries, prevent violations, and minimize the risk of fines and reputational losses. Materials and methods. Legislative and regulatory acts, articles from international scientific journals, conference abstracts, and official data from research companies were used as study materials. The analysis of the e-commerce markets in China, the USA, and the Russian Federation was based on annual sales growth data and a growth test, using linear regression with the coefficient of determination to identify trends. Results. We analyzed the features and limitations of the regulation of digital platform markets in Russia through the prism of foreign experience in the USA, EU, and China, which allowed us to identify regulatory problems in Russian legislative practice as a factor reducing the effectiveness of antitrust compliance in the corporate governance system of electronic trading platforms in Russia. The possibilities and directions for the development of internal compliance within the internal control system of Russian marketplaces are substantiated, the sustainable development of which will require a revision of the business model, operational conditions, and contractual frameworks for interactions with sellers. The importance of adjusting platform economic policies and establishing an internal compliance system to prevent reputational and financial losses for marketplaces and sellers is emphasized. Conclusion. Restrictions on sellers’ interactions with buyers increase the risk of reputational losses. In the context of the ESG agenda, the emphasis is on socially oriented business transformation and balancing contracts among the platform, sellers, and buyers. To effectively regulate digital markets, it is necessary to revise marketplace business models and legislation to strengthen antitrust compliance and ensure sustainable development that prioritizes social and corporate governance considerations.