The primary focus of quality assurance in software development is to ensure that the software meets specified requirements and is of high quality before it is released. QA processes involve systematic testing, which includes identifying bugs, verifying functionalities, and assessing performance under various conditions. By implementing QA practices, teams can reduce risks, ensure user satisfaction, and avoid costly post-release fixes. Continuous integration and testing procedures help maintain quality throughout the development lifecycle, promoting a culture of excellence within the organization.