Functional requirements are
|| [t]he business, operational, and security features an organization wants included in a program.
|| [c]haracteristics of the deliverable described in ordinary, non-technical language that is understandable to the customer. Customer plays a major, direct role in their development.
- ↑ Framework for Cyber-Physical Systems, at 12.
- ↑ IEEE, IEEE Standard Glossary of Software Engineering Terminology (IEEE Std 610.12-1990) (1990) (full-text).
- ↑ FFIEC IT Examination Handbook, Development and Acquisition, Appendix B: Glossary (full-text).
- ↑ California Office of Systems Integration, Definitions (full-text).