Abstract: A system is provided for facilitating the self-service onboarding and integration of financial products and services into third-party platforms. The system is configured to provide a catalog accessible to authorized users, including third-party developers or client users acting on behalf of a company. The catalog enables users to browse and request financial products or services, initiating an onboarding process that verifies regulatory compliance and aligns user entitlements for secure access. The system configures and facilitates bidirectional data-sharing connections between the financial institution and third-party platforms, ensuring compliance with applicable security protocols. Access to financial products or services is provided through pre-built micro frontend applications or cloud-based APIs, integrated into third-party platforms to deliver embedded user experiences.