What is the definition of a Use Case?

A Use Case is defined as a description of system behavior in response to requests, focusing on how a user will interact with a system to achieve specific goals. This concept is widely used in business analysis and software development to detail the functional requirements of a system.

Use Cases help to identify and clarify user requirements by outlining the interactions between the user (or actor) and the system. They typically include scenarios that define a set of actions or events and their corresponding outcomes. By capturing the user's perspective, Use Cases facilitate better understanding of how the system should behave under various conditions, guiding development and testing processes.

In contrast, while a summary of project objectives, calculating project budgets, and scheduling project tasks are all relevant activities within project management, none of them describe the specific interaction between users and systems as effectively as Use Cases do. This makes the definition provided in the correct answer particularly crucial for grasping core concepts in business analysis.