Business analysis - Record
Non-functional requirement
(NFR)
A required quality of a system, such as speed, security or reliability
What's it for?
Makes clear how well a system must work, such as how fast, secure or reliable it needs to be.
For example…
A non-functional requirement says page loads must stay under three seconds during peak hours
“The checkout page must load within two seconds for 95% of users” is an NFR because it describes required performance rather than a feature
Think of it like…
Saying a car must be quiet and reliable, not only that it has cup holders