Software testing is a fundamental pillar of software engineering which ensures that applications function correctly, meet user requirements, and remain reliable under different conditions. As software systems become more complex and the demand for faster development grows, testing strategies have evolved to meet new challenges. This paper aims to comprehensively compare traditional and modern software testing techniques to provide practitioners with a structured understanding of their evolution, strengths, limitations, and applicability. It covers classical methods such as unit testing, integration testing, system testing, acceptance testing and other testing types like black-box, white-box,... More >