Responsible for solution design and architecture for communication channels and system connectivity between SAP S/4HANA Cloud, SAP BTP, a custom-built buying solution, SAP Ariba, Matrix42, Salesforce, and various catalog systems. The primary objective was to ensure that each system could operate independently while enabling event-driven data exchange, centralized monitoring, scalability, and extensibility within SAP BTP. Designed and developed CPI flows, APIs, custom workflows, tailored applications, and system customizations in close collaboration with the customer and an external team.