Difference Between Functional Testing and Non-Functional Testing

Functional testing focuses on checking the specific functions of a software application to ensure they work as intended. It includes testing of features, database interactions, APIs, and user interfaces.

On the other hand, non-functional testing evaluates aspects such as performance, scalability, reliability, and security of the software system. It measures how the system behaves under certain conditions and assesses its overall performance.

While functional testing validates the functional requirements of the software, non-functional testing assesses the quality attributes of the system.

Both types of testing are essential for ensuring the overall quality and performance of a software application.