!!! Overview
[{$pagename}] ([NFR]) within design is a [requirement] of a system of __how it should perform__


[{$pagename}]s define such as runtime qualities such as scalability, and [reliability]. 

[{$pagename}]s often address the [User Experience]


[{$pagename}]s also define qualities including 
* maintainability by the [Operations Team]
* [Testing]
* extensibility
* deployability

!! [Agile] and [{$pagename}]
[{$pagename}]s are effectivly [Backlog] [Constraints]

[{$pagename}] are persistent qualities and [constraints] that, unlike [Functional Requirements], are typically revisited as part of the [Definition of Done] (DoD) for each [Iteration], Program Increment (PI), or release. [NFRs] influence all [backlogs]

[{$pagename}]s are __NOT__ themselves [backlog] items. They are [constraints] on development that limit some degree of design freedom for those building the [system]. These [constraints] are often defined in the acceptance criteria ([Definition of Done]) for multiple [backlog] items. 

[{$pagename}]s are often driven by [Compliance] to ensure the [Product] meets the [Regulatory compliance] or [Standard compliance]

The following criteria help define NFRs: 
* Bounded – When they lack [Bounded Context], NFRs may be irrelevant and lead to significant additional work. 
** For example, an airplane’s flight controls should be more rigid reliability than the infotainment system. 
* Independent – NFRs should be independent of each other so that they can be evaluated and tested without consideration of or impact from other system qualities. 
* Negotiable – Understanding NFR business drivers and bounded context mandates negotiability. 
* Testable – NFRs must be stated with objective, measurable, and testable criteria.
© Scaled Agile, Inc.


!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Nonfunctional Requirements|https://www.scaledagile.com/training/calendar/|https://www.scaledagileframework.com/nonfunctional-requirements/|target='_blank'] - based on information obtained 2019-03-21