This document provides information on software testing concepts. It defines software as a set of instructions used to operate computers, and software testing as a process to ensure the actual results match expected results by identifying defects. Testing is important for reasons such as cost effectiveness, security, product quality, and customer satisfaction. The document also describes the software development life cycle (SDLC) and software testing life cycle (STLC) processes, and covers different types of testing including functional, non-functional, manual, and automated testing.
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