What is functional testing?

Functional testing is a type of software testing that evaluates the features and functions of a software application to ensure they operate according to specified requirements. Testers focus on verifying that each function of the software works correctly by providing appropriate input and expecting the correct output. This testing is typically black-box, meaning testers don’t need to know the internal code structure. Functional testing is crucial for validating the core functionality of an application before it is released to users.