Functional Testing vs Non-Functional Testing in Tamil- 4 | Software Testing Tutorial
Welcome to our QA Testing in Tamil series!
In this video, we clearly explain the difference between Functional Testing and Non-Functional Testing with real-time examples used in software companies.
Both these testing types are essential for delivering a high-quality product — but their purpose and focus are completely different.
🧠 What You’ll Learn in This Video:
✅ What is Functional Testing?
✅ What is Non-Functional Testing?
✅ Key differences between them
✅ Real-time examples from project scenarios
✅ Why both are important for QA Engineers
✅ When to perform each testing type
💡 Simple Explanation:
Functional Testing checks “what the system does.”
It verifies that all features work as expected.
👉 Example (Real-time):
When you log in to a shopping website – entering username & password, clicking Login, viewing orders, adding items to cart — all these are part of Functional Testing.
You’re checking if each function works correctly.
Non-Functional Testing checks “how the system performs.”
It focuses on performance, speed, reliability, and user experience.
👉 Example (Real-time):
After login, if the website loads 1000 products in under 3 seconds, handles 100 users at once, and works smoothly on all browsers — that’s Non-Functional Testing.
🧩 Types Covered:
🧱 Functional Testing includes:
Unit Testing
Integration Testing
System Testing
User Acceptance Testing (UAT)
⚙️ Non-Functional Testing includes:
Performance Testing
Load Testing
Security Testing
Usability Testing
Compatibility Testing
💻 Who Should Watch:
QA Testers (Manual + Automation)
Students preparing for Software Testing Interviews
Beginners learning QA concepts in Tamil
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💬 Comment Below:
Which testing type do you find more challenging in your project — Functional or Non-Functional?