Testing ensures software is high-quality, reliable, and meets user expectations before its official launch.
In-house testing by the internal development team. It identifies critical bugs and ensures the system works as intended before any external exposure.
External testing by real users in real-world environments. It captures feedback on usability and finds bugs missed in controlled settings.
The final sign-off. The intended users confirm the system meets all business and functional requirements defined during analysis.
Testing with full knowledge of the internal source code. It ensures every logical path, loop, and function within the code is executed and correct.
Testing without any knowledge of the code. It focuses purely on whether the system produces the correct inputs and outputs based on requirements.