How to Define Non-Functional Requirements of a Project?
There are two sides to requirements. There’s the functional “what are the features to be built to fulfill the user’s need?” – This part is usually defined on all projects and lies in the product owner’s domain. Then there’s the non-functional requirements like “The feature must not compromise security” or “Performance metrics can’t fall below X”. These are the non-functional requirements and usually fall under the quality domain.
Developing the product follows functional requirements but developing it the right way covers the non-functional requirements. Of course, for any requirement to work, they need to be well defined and clear. Requirements like “The system must be secure.”, “The system must not go down.”, or “The system must not have performance issues” do not clarify the right measurement as well as the right action to be taken. Hence, the whole purpose of non-functional requirements are lost.
If defined well, NFRs can be a great checklist for quality and performance for any software.
In this blog, we share how non-functional requirements are defined at Mindbowser. We usually divide quality into separate areas of focus and then define the NFRs for each.
Conclusively, Non Functional requirements enable you to understand the performance and health of your ongoing development so that you can make critical adjustments in your execution to achieve your goals. By defining non-functional requirements as above, you bring your team on board with the right development practices and the right way to do things.