Manual QA reviews require significant time and resources, especially for complex applications or high-volume customer interactions. The repetitive nature of manual testing can also lead to human error and fatigue.
The interpretation of quality standards may vary among different manual testers, leading to subjective assessments. This can result in inconsistent feedback and varying levels of quality across different customer service channels.
Scaling manual QA reviews to accommodate rapid software updates, new features, or increased customer interactions can be challenging. It may require hiring and training additional testers, leading to increased costs.