Non Functional Testing
In plain terms
Testing qualities like performance, security, and usability.
Going deeper
Non-functional testing evaluates how well the system performs, rather than what it does, covering speed, scalability, security, and reliability. It checks the 'ilities'.
Under the hood
Includes load, stress, security, and usability testing; often overlooked but critical at scale.
Examples
Load testing, security testing, scalability, reliability, usability.
Think of it like...
Like testing not whether a car drives, but how fast, safe, and comfortable it is.