What do Use-Case Models represent in an enterprise?

Use-Case Models are essential tools in enterprise architecture as they effectively capture and convey how users interact with a system or application. They represent business processes through specific use cases, which are scenarios that detail the various ways the users, referred to as actors, engage with the system to achieve particular goals.

In this context, the use-case approach allows stakeholders to understand the functionality required by the system, illustrating not only what the system should do but also the roles of different individuals or systems that interact with it. This representation focuses on real-world user needs, ensuring that the requirements of the business processes are accurately reflected.

Other choices, while relevant to various aspects of enterprise architecture, do not capture the essence of use-case models as effectively. For instance, organizational hierarchy illustrates the structure of the organization rather than the interactions within a system. Financial projections are a separate aspect of business planning and are not represented in a use-case model. Similarly, technology details, while important in the context of system design, do not define the user interactions or business processes that use-case models are intended to depict. Thus, the correct answer emphasizes the role of use-case models in illustrating the complexities of user interactions within a business context.