What is Verification & Validation Testing?
Verification checks whether the software is being built correctly according to specifications, while Validation checks whether the final product meets user needs and requirements.
Objectives
- Ensure software meets specifications (Verification)
- Ensure software fulfills intended purpose (Validation)
- Identify defects early in the development cycle
Advantages
- Improves product quality and reliability
- Reduces defects in later stages
- Ensures user satisfaction
Limitations
- Time-consuming for large systems
- Requires detailed documentation
- May not catch all usability issues
Verification & Validation Process
- Review requirements and specifications (Verification)
- Design test cases and scenarios
- Execute tests on the software (Validation)
- Record and analyze defects
- Fix defects and retest until requirements are met
️ Example
Example: In a banking application, verification ensures all transaction modules are coded correctly, while validation ensures the system works correctly when customers perform transactions.
Best Practices
- Plan verification and validation early in SDLC
- Use automated and manual testing where needed
- Document all test results clearly
- Ensure continuous feedback and improvement
