Description: A functional requirement defines a specific behavior or function of a system. These requirements are essential for software development as they establish what the system must do to meet user needs and achieve business objectives. Functional requirements can include descriptions of processes, data that the system must handle, and the interactions users will have with the system. They are characterized by being clear, measurable, and verifiable, allowing developers and stakeholders to understand and validate the expected behavior of the system. Additionally, functional requirements are fundamental in various development methodologies, including agile methodologies and behavior-driven development (BDD), where they are used to define test scenarios that guide software development. In summary, functional requirements are the foundation upon which a system’s functionalities are built, ensuring alignment with end-user expectations and needs.
