Testing and Quality Assurance (QA) are critical to delivering reliable, high-performing, and secure digital products. By combining automated and manual testing approaches, QA teams ensure seamless functionality across different devices, browsers, and operating systems. From usability to edge-case scenarios, every component is rigorously tested to eliminate bugs, enhance performance, and provide a consistent user experience. This meticulous process helps catch issues early, reducing costly rework and protecting brand reputation.