Agile testing is a software testing approach rooted in the principles of Agile software development, where testing is integrated throughout the development lifecycle rather than being a separate phase. It emphasizes efficiency, agility, and collective ownership, shifting focus from comprehensive documentation and fixed plans to delivering high-quality software that provides real business value. Originating in the late 1990s with the Chrysler Comprehensive Compensation System project, it gained momentum through Extreme Programming's practices, such as test-driven development, which highlighted the benefits of integrated testing in the absence of dedicated testing teams. Agile testing encourages collaboration between developers and testers within small, cross-functional teams, fostering adaptability to change, and prioritizing customer satisfaction. The approach aligns with the Agile Manifesto's values, emphasizing interactions over processes, working software over documentation, customer collaboration, and responsiveness to change, aiming to improve software quality and meet customer needs within dynamic and evolving project environments.