Knowledge · ISO/IEC 25010:2011

Non-Functional Requirements

Quality characteristics a system must satisfy beyond its functional behavior.

Compatibility

Co Existence
Interoperability

Maintainability

Modularity
Reusability
Analyzability
Modifiability
Testability

Performance

Time Behavior
Resource Utilization
Capacity

Portability

Adaptability
Installability
Replaceability

Reliability

Availability
Fault Tolerance
Recoverability

Security

Confidentiality
Integrity
Authenticity
Accountability

Usability

Learnability
Operability
Accessibility
Error Protection