Can you explain the term 'Use Cases' and its role in software development?

Use Cases are descriptions of user interaction scenarios with the system to achieve a specific goal.

In software development, use cases help to:

• Understand how users will use the system.
• Define functional requirements.
• Plan testing and development.

An example of a use case for a notes application:

1. The user opens the application.
2. Creates a new note.
3. Saves the note.

Use cases are usually described as a sequence of steps and may include alternative scenarios and exceptions. This helps the development team better understand the requirements and ensure usability.