Quality Control (QC)

What is quality control?

Quality control is the inspection of a finished or near-finished product to find defects and confirm it meets its requirements. It is reactive by design. Where quality assurance prevents problems by improving the process, QC detects the problems that already made it into the build.

In software, QC covers code reviews, functional testing, bug tracking, and release verification. The output is a verdict: is this feature fit to ship, and if not, what has to be fixed first. A QC pass on a payment flow might surface a rounding error that every unit test missed, because the error only appears when real currency conversion runs end to end. That verdict, plus a clean record of defects, is what QC delivers.

Traditionally QC sat at fixed checkpoints near the end, run by dedicated testers. Modern Agile practice pushes it earlier and spreads it across the team, verifying quality continuously instead of saving it all for a final gate. QA and QC work together: QA lowers how many defects appear, QC catches the ones that still slip through.

Quality control at Dallonses

Every feature we build gets verified before it closes. Functional testing against real workflows, not a scripted demo. A defect found in QC goes back to development, gets fixed, and runs through the check again. Nothing ships on a maybe.

For clients with live products, our quality assurance work pairs prevention with inspection so problems get caught at the cheapest possible moment. We run the checks with the team, share what we find plainly, and keep a clear record of what's resolved and what's still open. That honesty is the point. The client always knows exactly where the product stands.

Need to know whether a release is actually ready before it reaches users? Let's verify it properly.

Talk to us about QC