Functional testing frequently involves evaluating certain pieces of the underlying code. A clearer overall picture can be achieved by comparing actual outputs to predicted behaviour rather than by evaluating each module separately. Errors frequently happen when modules communicate with one another.
Aspects of an application that don't directly influence its functionality but are nonetheless crucial for the user experience are evaluated during non-functional testing. Performance and dependability under pressure, albeit not fundamental components of a software system, may surely make or break the user experience. Even while anything that fails a non-functional test would not always cause a problem for customers, it could nonetheless indicate a flaw in the system.
Your product may be really good in functional and non functional testing services. However, if the features and functions fell short of consumer expectations, it would be considered a failure. By employing this test strategy, you can ensure that the software performs as it should since functional testing compares every component of the product to functional criteria. In functional testing, the usefulness of an application is assessed in relation to a set of criteria or requirements.
Non-functional testing examines how well the software performs in a practical or business environment. Non-functional testing failures may indicate systemic problems that might eventually result in a system crash.
Additionally, this type of testing is crucial for ensuring customer satisfaction. If your code isn't user-friendly, even if it's free of bugs. There is no question that your consumers will look for better solutions.