Having a QA team is crucial even if bug leakage occurs after a release, for several reasons. Bug leakage does not necessarily indicate that the QA team is ineffective; it can highlight the complexity of software testing and the multifaceted nature of software development.QA team is integral to the software development lifecycle, contributing to overall product quality, risk management, and continuous improvement. Bug leakage is a reality of complex software systems, but a well-functioning QA team helps minimize and manage these issues effectively.