Checkout is the final step in converting interest to sales, and its reliability is paramount. Untested checkouts allow minor errors to escalate into major sales blockers. These can include unnoticed script changes, integration issues, or promotional updates that disrupt process flow. A poorly performing checkout increases cart abandonment and decreases revenue potential. Implementing a daily QA routine armed with a checklist for testing potential disruptors ensures that your checkout remains functional and customer-friendly. It's an operational safeguard that mitigates the risk of sales evaporation due to unnoticed issues.