This study examines the evolutionary trajectories and governance instruments of multisided digital platforms designed to support different dimensions of family well-being. Against the backdrop of the rapid expansion of the FemTech and EdTech segments, whose scale in 2024-2025 reached threshold levels, there emerges a clear demand for conceptual schemes capable of reconciling the commercial priorities of providers with the right of parents to exercise their educational and caregiving functions, and with children’s fundamental rights to safety and privacy. Methodologically, the study is grounded in a comparison of international regulatory practices, including the British Age-Appropriate Design Code and California’s AB-2273, both of which entrench the logic of Safety by Design. Within the article, an integrative model of interest alignment is substantiated, built on the premises of behavioral design and on architectural patterns of API governance. The findings indicate that the resilience of family-oriented digital ecosystems is determined not by the intensification of repressive control, but by the institutionalization of regimes of “managed autonomy,” sustained through algorithmic transparency and the principled minimization of personal data extraction. Particular emphasis is placed on the fact that, by 2025, digital well-being acquires the status of a product of distributed responsibility shared by all parties involved in platform-mediated interaction.