Software has become an integral part of our lives, from the applications on our smartphones to the software that runs our cars, homes, and businesses. As such, the quality of the software we use is essential to our safety, productivity, and satisfaction.

This is where quality assurance (QA) comes into play. QA is the process of ensuring that software products meet specified requirements and are free from defects. It involves a series of activities that are performed throughout the software development lifecycle to identify, prevent, and rectify defects in the software.