1. In software engineering and product development, qualities and attributes of a system that are not related to specific functions or actions but rather to how well the system performs those functions, including aspects like performance, security, reliability, usability, and maintainability.
The non-functional features of the application include its response time, security protocols, and user interface design.
As características não-funcionais da aplicação incluem seu tempo de resposta, protocolos de segurança e design da interface do usuário.
2. Requirements that specify criteria for judging the operation of a system, rather than specific behaviors or functions.
When designing the system, we must consider non-functional features such as scalability and fault tolerance.
Ao projetar o sistema, devemos considerar características não-funcionais como escalabilidade e tolerância a falhas.