This article explores Brazil's role in Latin American platform capitalism, integrating Ruy Mauro Marini's theory of sub-imperialism with contemporary studies of platform capitalism. It examines the connections between Latin American platforms, overexploitation, and data accumulation, leading to the concept of platform sub-imperialism: the emergence of certain Southern countries as platform sub-imperialist powers, acting as regional centers of data and capital accumulation through the expansion of their platforms into neighboring countries. This positioning constitutes an intermediate state between hegemonic nations and "digital colonies" in the international division of platform labor, data accumulation, and technological dependency. The article challenges the view that all Global South countries are merely "a mine of low-yield data" and highlights the role of Latin American platforms, such as Brazil's iFood, in developing their own platforms and expanding into neighboring countries. This expansion reproduces similar power dynamics among Southern countries as those observed with the North, a phenomenon called platform sub-imperialism. Brazil has emerged as a major sub-imperialist power in Latin America, using its digital infrastructure, regulatory framework, and skilled workforce to lead investments in big data in the region. iFood, a leading labor platform in Brazil, exemplifies this, combining national and foreign capital to expand its operations across Latin America. It also integrates the precarious work of delivery workers with the data production of its 3000 data scientists, contributing to the accumulation of value and data. Platform sub-imperialism is characterized by the overexploitation of labor and the accumulation of data from neighboring countries. This process is reinforced by the regional concentration of big data infrastructure, research investment, and tech workers, reproducing the structural bases of platform sub-imperialism. The article concludes that platform sub-imperialism solidifies Brazil's position as a hub for data and capital accumulation, establishing it as a platform sub-imperialist power.This article explores Brazil's role in Latin American platform capitalism, integrating Ruy Mauro Marini's theory of sub-imperialism with contemporary studies of platform capitalism. It examines the connections between Latin American platforms, overexploitation, and data accumulation, leading to the concept of platform sub-imperialism: the emergence of certain Southern countries as platform sub-imperialist powers, acting as regional centers of data and capital accumulation through the expansion of their platforms into neighboring countries. This positioning constitutes an intermediate state between hegemonic nations and "digital colonies" in the international division of platform labor, data accumulation, and technological dependency. The article challenges the view that all Global South countries are merely "a mine of low-yield data" and highlights the role of Latin American platforms, such as Brazil's iFood, in developing their own platforms and expanding into neighboring countries. This expansion reproduces similar power dynamics among Southern countries as those observed with the North, a phenomenon called platform sub-imperialism. Brazil has emerged as a major sub-imperialist power in Latin America, using its digital infrastructure, regulatory framework, and skilled workforce to lead investments in big data in the region. iFood, a leading labor platform in Brazil, exemplifies this, combining national and foreign capital to expand its operations across Latin America. It also integrates the precarious work of delivery workers with the data production of its 3000 data scientists, contributing to the accumulation of value and data. Platform sub-imperialism is characterized by the overexploitation of labor and the accumulation of data from neighboring countries. This process is reinforced by the regional concentration of big data infrastructure, research investment, and tech workers, reproducing the structural bases of platform sub-imperialism. The article concludes that platform sub-imperialism solidifies Brazil's position as a hub for data and capital accumulation, establishing it as a platform sub-imperialist power.