Functional testing

Functional testing ensures that the system meets the needs expressed by users and stakeholders, regardless of the domain.
 

They detect errors in expected functionalities before the software is delivered, reducing defects in production.

Fixing a bug detected late in the lifecycle is much more expensive than finding it through functional testing during development or testing phases. This saves time, money, and reputation.

Functional testing (especially automated) allows you to verify with each new release that previous features still work. This is crucial in environments with frequent updates.

When tests are written in a language understandable by all, they facilitate communication between developers, QA, business teams, and clients.

By validating functional flows from the user’s perspective, they ensure a smooth, reliable experience that meets expectations, regardless of the end users (customers, agents, patients, etc.).

Functional test scenarios clearly describe the expected behavior of the system. They serve as a reference for maintenance or integration.