📖 Overview
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.
🔑 Key Aspects
🎯 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 of development
- Ensures user satisfaction and acceptance
⚠️ Limitations
- Time-consuming for large and complex systems
- Requires detailed documentation and planning
- May not catch all usability issues
📋 Process
Verification & Validation Process
- Review requirements and specifications (Verification)
- Design test cases and scenarios for validation
- Execute tests on the software (Validation)
- Record and analyze defects found
- Fix defects and retest until requirements are met
🌍 Example
Real-world Example
Example: In a banking application, verification ensures all transaction modules are coded correctly according to specifications, while validation ensures the system works correctly when customers perform real transactions.
🏆 Best Practices
Best Practices for Verification & Validation
Plan verification and validation activities early in SDLC
Use a combination of automated and manual testing where appropriate
Document all test results and defects clearly
Ensure continuous feedback and improvement loop