👨💻 1. Tester
A Tester checks the product to find defects — manually or automationlly.
Main tasks:
- Understand requirements
- Write test cases & data
- Execute tests
- Report & retest bugs
📍 Tester is part of QC, focused on the product, not the process.
🛠️ 2. QC = Quality Control
QC checks the final product to ensure it meets requirements and works as expected.
What QC does:
- Test after development
- Validate features
- Verify output matches input
🎯 QC = Is the product right?
🧠 3. QA = Quality Assurance
QA focuses on the process to prevent defects from happening in the first place.
What QA does:
- Define standards & workflows
- Improve team practices
- Ensure consistent quality
🎯 QA = Are we building it the right way?
🔍 Quick Comparison
| Role | Focus | Main Goal | Involves Testing? |
|---|---|---|---|
| Tester | The software | Find bugs | ✅ Yes |
| QC | The final product | Match requirements | ✅ Yes |
| QA | The process | Prevent bugs from the start | ❌ Not directly |
✅ Final Thought
Tester ≠ QA ≠ QC.
Each role plays a different part in delivering quality software. If you're starting out, begin as a Tester — but understand where QA and QC fit into the bigger picture. That’s how you level up.
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