Static vs. Dynamic Testing: Key Differences Every Software Tester Should Know

Software testing is broadly divided into two approaches: static and dynamic testing. Static testing does not require executing the software and instead involves reviewing requirements, designs, and source code to catch defects early. Dynamic testing, by contrast, is conducted by running the software, where testers supply inputs and evaluate whether the application behaves as intended, using methods such as white box, black box, and grey box testing. Identifying issues during the design or requirements phase through static testing helps reduce development costs and rework. Together, both approaches form a foundational framework for software quality assurance, combining defect prevention with defect detection.