Briefle words · Product & specs
Non-functional requirements
Requirements about how well the system works (speed, security, accessibility, reliability) rather than what it does.
Say it to an AI
Write the Requirements section of our payroll-run PRD. Keep functional requirements to three lines, then add non-functional requirements for performance, security (2FA, encryption, audit log), accessibility (WCAG 2.2 AA) and reliability (no double payments).
How an expert would brief the stronger version of “Payroll PRD requirements”.
See it
Try it as a puzzle →A fintech startup specs the payroll run for small businesses paying up to 50 employees.
Why: B has a separate Non-functional section with performance, security, accessibility and reliability; A has only features.
Related words
Room 4 · Requirements & scope
Learn “Non-functional requirements” in a five-minute lesson