FURPS

FURPS is an acronym that stands for:

• Functionality
  • It defines the functional requirements that have defined previously.
  • The remaining letters describe the non-functional requirements.
• Usability
  • Refer to operational characteristics related to users, such as the user interface, related work procedures, online help and documentation.
• Reliability
  • Refer to the requirements that describe system dependability.
• Performance
  • Describe the operational characteristics related to measure workload, such as throughput and response time.
• Security
  • Refer to the grant of access control to application and data protection during storage and transmission.