Explore a domain-driven design journey in this conference talk from YOW! Perth 2023. Delve into the challenges of creating a healthcare and disability insurance claiming platform for diverse stakeholders who don't share a common language. Follow the evolution of the domain model through three phases, from initial design to radical reinvention. Learn how Domain-Driven Design principles were applied to balance specificity and genericness in system design. Gain insights into aligning models with different customers, handling varied terminology, and adapting UX scenarios for heterogeneous user groups. Discover valuable lessons on navigating complex domain modeling in fintech and healthcare sectors.