It’s typically used in software development as part of the functional requirements document/plan, but use case scenarios aren’t just for developers. And the best way to validate a project to stakeholders (and make sure your creation is a hit) is to show them why and how the intended audience will use it.Ī use case scenario describes how a user might interact with a system to achieve a goal. Whether working on an app or setting up a sandwich shop, your project needs a reason for existing.