FURPS

FURPS is an acronym representing a model for classifying software quality attributes (functional and non-functional requirements):

• Functionality - Capability (Size & Generality of Feature Set), Reusability (Compatibility, Interoperability, Portability), Security (Safety & Exploitability)
• Usability (UX) - Human Factors, Aesthetics, Consistency, Documentation, Responsiveness
• Reliability - Availability (Failure Frequency (Robustness/Durability/Resilience), Failure Extent & Time-Length (Recoverability/Survivability)), Predictability (Stability), Accuracy (Frequency/Severity of Error)
• Performance - Speed, Efficiency, Resource Consumption (power, ram, cache, etc.), Throughput, Capacity, Scalability
• Supportability (Serviceability, Maintainability, Sustainability, Repair Speed) - Testability, Flexibility (Modifiability, Configurability, Adaptability, Extensibility, Modularity), Installability, Localizability

The model, developed at Hewlett-Packard was first publicly elaborated by Grady and Caswell. FURPS is now widely used in the software industry. The was later added to the model after various campaigns at HP to extend the acronym to emphasize various attributes.

See also

• Types of requirements
• Expanded list of types of requirements

Further reading

• Watson, Mike (2006). Managing Smaller Projects: A Practical Approach. Multi-Media Publications Inc. pp. 117 ff. ISBN 978-1-895186-85-7.
• Kenett, Ron; Baker, Emanuel (1999). Software Process Quality: Management and Control. CRC Press. pp. 130 ff. ISBN 978-0-8247-1733-9.
• Nakajo, Takeshi; Sasabuchi, Katsuhiko; Akiyama, Tadashi (April 1989). "A Structured Approach to Software Defect Analysis" (PDF). Hewlett-Packard Journal. 40 (2). Palo Alto: Hewlett-Packard Co.: 50–56. Archived from the original (PDF) on 2023-03-13. Retrieved 2016-03-24.
• Fischer, William A. Jr.; Jost, James W. (April 1989). "Comparing structured and unstructured methodologies in firmware development" (PDF). Hewlett-Packard Journal. 40 (2). Palo Alto: Hewlett-Packard Co.: 80–85. Archived from the original (PDF) on 2023-03-13. Retrieved 2016-03-24.
• Grady, Robert; Caswell, Deborah (1987). Software Metrics: Establishing a Company-wide Program. Prentice Hall. pp. 159. ISBN 0-13-821844-7.
• Carter, Donald; Stilwell Baker, Barbara (1992). Concurrent Engineering, The Product Development Environment for the 1990s. Addision-Wesley. pp. 175. ISBN 0-201-56349-5.

External links

• IBM on Furps