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What Is Functional Testing?

Functional testing verifies that a software system’s functions and features work according to specifications.

Related terms: API testing, automated testing, end-to-end testing, regression testing

Functional Testing: Examples in Context

Test engineers perform functional testing on a banking application to ensure that customers can successfully perform transactions, check balances, and transfer funds.

QA testers conduct functional testing on an e-commerce platform to validate that product search, add-to-cart, and checkout processes work correctly.