Event-driven architecture (EDA) is widely used in financial services for its scalability and real-time responsiveness, but traditional choreography-based EDA often leads to complexity and maintenance challenges due to scattered business logic, hidden coupling, and limited observability. Temporal offers an alternative by centralizing control through durable execution and workflow orchestration, addressing these issues with stateful workflow management, integrated error handling, and unified observability. Temporal's approach simplifies debugging and scaling by encapsulating entire business processes in workflows, allowing for more efficient error recovery and dynamic workflow design. By adopting Temporal incrementally, financial institutions can enhance the modularity and reliability of their systems while reducing risks and accelerating modernization efforts.