This post details the migration of GrabUnlimited's membership program from a legacy system to a Temporal workflow-based architecture, resulting in an 80% reduction in production incidents. The authors analyze their challenges with scalability, resiliency, and concurrency in the old architecture and explain how Temporal provides solutions such as infinite retries and better state management. The shift emphasizes a focus on core business logic rather than system management, ultimately leading to improved user experience and system stability.