Difference Between System Testing & Integration Testing

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By the end of this blog post, you will have a complete understanding of the distinctions between system testing and integration testing, enabling you to make informed decisions regarding the testing strategy for your software projects. Whether you are a seasoned software professional or just starting your journey in the field, this knowledge will empower you to navigate the testing landscape more effectively.

System TestingIntegration Testing
System testing is the process of testing an integrated system to evaluate its compliance with the specified requirements. It focuses on testing the entire system as a whole to ensure that all components work together correctly.Integration testing is the process of testing the interaction between different components or modules of a system to identify defects in their interfaces and ensure that they function properly when integrated.
System testing examines the overall behavior and functionality of the entire system, including all its components and their interactions. It validates that the system meets the specified functional and non-functional requirements.Integration testing concentrates on verifying the correct interaction and communication between different modules or components of the system. It ensures that the interfaces between components are working as intended and that the data flows correctly between them.
System testing is typically performed at the end of the development process when the system is fully integrated. It is a higher-level testing activity that follows integration testing.Integration testing is performed after unit testing and focuses on testing the integration points between individual units or components. It ensures that the modules work together as expected before the complete system is tested.
System testing is performed in an environment that closely resembles the production environment to simulate real-world scenarios accurately.Integration testing is usually carried out in a controlled environment where individual components or modules are tested in isolation or with simulated dependencies.
System testing is typically black-box testing, where testers evaluate the system’s behavior based on the specified requirements without knowledge of the internal implementation.Integration testing can involve both black-box and white-box testing approaches. It focuses on testing the interfaces and interactions between components but may also require knowledge of the internal structure to design effective test cases.
The main objective of system testing is to ensure that the entire system functions correctly, meets user requirements, and performs reliably in the intended operational environment.The main objective of integration testing is to uncover defects in the interaction between components and verify that they work together seamlessly, adhering to the defined interfaces and data exchange protocols.

In summary, system testing validates the overall behavior and functionality of the complete system, while integration testing concentrates on verifying the correct interaction and communication between different components or modules. Both types of testing play crucial roles in ensuring the quality and integrity of a software system.

Also, Read:

Load Testing: Must-Know Interview Questions

Difference Between White-box Testing & Black-box Testing

Difference Between Smoke Testing & Sanity Testing

Open-Source vs. Commercial Testing Tools


Avinash is the Founder of Software Testing Sapiens. He is a blogger and Software Tester who has been helping people to get thier Jobs over a years Now.

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