Functional Testing vs Regression Testing - QA Testing Interview Question

In QA testing, functional testing and regression testing are two important types of testing methods. Let's explore the difference between the two:

Functional Testing:

Functional testing focuses on testing the individual functionalities of the application to ensure that each function works as intended. It mainly deals with validating the input/output of the system against the defined requirements.

Regression Testing:

Regression testing, on the other hand, is the practice of ensuring that new code changes do not adversely affect the existing functionalities of the application. It involves re-testing the previously tested functionalities to check for any unexpected issues or bugs.

In summary, while functional testing verifies the working of individual functions, regression testing makes sure that the overall system continues to function correctly after any changes are made.