What are the 4 levels of testing?

The 4 levels of software testing (also referred to as levels of testing)
are the order in which testing is executed in the software development life cycle (SDLC).
Here's a concise overview

Unit Testing
Purpose: To test the individual pieces or modules of the software (such as functions, methods, or classes).
Done by: Developers.
Objective: Make sure each unit is working fine and independently.
Example: Testing a login function to ensure it will take valid credentials and reject invalid ones.
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Integration Testing
Objective: To test interactions among combined modules.
Carried out by: Developers or testers.
Objective: To identify interface or communication faults between modules.
Example: Ensuring that the login module properly interfaces with the database module.
System Testing
Objective: To test the integrated and complete system as an entirety.
Carried out by: QA/Test engineers.
Objective: Verify the entire software against given requirements and behaves as desired.
Example: Full application (login → dashboard → logout) testing to verify overall behavior.
Acceptance Testing
Objective: To validate software from the client or end-user's point of view.
Done by: End users or clients.
Objective: Verify the product for release and is as required by business.
Example: End user verifies the software meets all business needs prior to sign-off.
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In short:
Unit Testing → Integration Testing → System Testing → Acceptance Testing

Why choose SevenMentor for Software Testing Training?

SevenMentor provides comprehensive Software Testing Training in Pune for beginners and working professionals both. The course structure includes Manual Testing, Automation Testing using Selenium, Java, Python programming languages,
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Location & Contact
You can visit the institute at: SevenMentor Training Institute
SevenMentor Pvt. Ltd.- Software testing training institute in Pune
Address: Shivaji Nagar, Pune, Maharashtra – 411005
☎️ Phone: +91 77980 58777
Website: www.sevenmentor.com
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Conclusion In the end, software testing helps every business in maintaining product quality,
ensuring security, increasing customer satisfaction, and bringing down operational costs.
The best-developed applications also bear the risk of failure if not tested for real-world conditions. By joining SevenMentor's
Software Testing Training in Pune, you will be well-trained and confident to build a successful career in this ever-growing field.
Learn from experts, get certified, and step into the world of software quality assurance with guaranteed placement support.