The Role of API Management vs ESB in Modern SOA.

Senior SOA architecture requires a deep understanding of organizational politics, data consistency, and enterprise-wide scalability.

At the senior level, we focus on governance and the 'Service Inventory' as a whole. It's about ensuring that the canonical data model is adhered to across multiple business units. We move away from synchronous Two-Phase Commits (2PC) toward Sagas and Eventual Consistency to maintain system availability during network partitions. We use modern API Gateways to provide a facade for older ESB-driven SOAP services.