Nonfunctional requirements is an umbrella term used to describe those characteristics your system exhibits that cannot simply be implemented like a normal feature. They include aspects like the acceptable latency of a web page, the number of users a system should support, how accessible your user interface should be to people with disabilities, or how secure your customer data should be. The term nonfunctional never sat well with me. Some of the things that get covered by this term seem very functional in nature! One of my colleagues, Sarah Taraporewalla, coined the phrase cross-functional
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Cross functional requirements not NFR
