In this session, I will share our transformative journey in automating high-volume payment processing using AWS Step Functions. Initially, our solution struggled with complex looping logic, scaling challenges, and the inherent limitations of Lambda functions. These obstacles led to convoluted code and persistent issues with timeouts and retries.

By transitioning to AWS Step Functions, we shifted the heavy lifting of looping to the workflow layer. This change not only eliminated timeout issues—by processing tasks one at a time—but also introduced robust, built-in retry mechanisms and a callback pattern that seamlessly integrated with webhook responses from our payment gateways. Join us as we delve into the technical strategies, best practices, and real-world lessons learned from orchestrating hundreds of money payouts with a reliable, scalable, and maintainable solution