An IT team is currently implementing a custom software platform to address some key needs of the company. Which of the following is considered a functional requirement?

Identifying the purpose of the proposed system directly relates to what the system should achieve or perform, which is the definition of a functional requirement. Functional requirements specify the functions that a system must provide, defining its behavior and what users expect it to do.

Identifying the users of the proposed system is part of understanding the system's scope and context, but not a functional requirement describing system behavior.

Identifying the development methodology is a project management decision, not a requirement of the software system itself.

Identifying the technology stack is a non-functional requirement related to implementation constraints or architectural decisions, rather than a specific function the system performs.