This Catalyst addresses the challenge of integrating advanced connectivity for industries like Automotive OEMs, where fragmented network services and non-standardized interfaces hinder innovation. By collaborating with Mobile Network Operators (MNOs) and Technology Vendors, Global System Integrators (GSIs) leverage the GSMA Open Gateway API model, including TM Forum APIs, exposing network services through standardized APIs to enable seamless data exchange and optimized connectivity. The business value lies in the monetization of Network APIs via a centralized portal that gives Automotive OEMs full visibility into network deployment options. This portal, managed by the MNO as a Federation Broker, allows OEMs to access the best Edge/MEC resources across networks, reducing deployment costs and accelerating the time-to-market for new vehicle applications. The Federation concept ensures efficient network handover across MNOs, enhancing service continuity and performance, while standardized APIs streamline solution reuse across various contexts, further lowering costs and boosting efficiency. By integrating TM Forum APIs and CAMARA for northbound interfaces and East-West Boundary Interfaces (E/W-BI) for cross-operator coordination, this solution establishes a robust ecosystem that supports new services with minimal adaptation. This model significantly reduces operational complexity for Automotive OEMs, increases energy efficiency, and ultimately enhances the user experience through low-latency, high-availability services.