Companies are under pressure to optimize their competitive organizational capabilities, sometimes taking risks, in order to maximize the business value they deliver in response to a constantly changing business environment. IT departments must face the question of whether the core systems that support management and operations are sufficient to serve as the foundation for accelerating change and must be prepared to continue to deepen them autonomously on their own. Hoshino Resort has fundamentally redefined its old operations model by focusing on a design approach by personnel from the field with domain knowledge and has begun working on application reform to realize this redefinition. In this session, we will introduce the findings from this transformation approach.