Difference Between System Testing Vs Integration Testing

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System Testing and Integration Testing are two critical phases in the software testing process, each serving distinct purposes.

System Testing is a comprehensive evaluation of the entire software application, ensuring it meets specified requirements and functions as intended.

It focuses on the system as a whole, simulating real-world usage scenarios to identify and rectify any issues.

Integration Testing, on the other hand, concentrates on the interactions between integrated components or modules.

It verifies that these interconnected elements work together seamlessly, detecting any conflicts or discrepancies that may arise during integration.

Now let’s see the difference between System Testing and Integration Testing.

AspectSystem TestingIntegration Testing
FocusTests the entire system as a whole.Tests interactions between integrated components or modules.
ScopeBroad in scope, covering all functionalities.Focused on specific interfaces and interactions.
Testing LevelHigher level testing.Lower level testing.
Testing ObjectiveValidate the entire system meets specified requirements.Verify that integrated components work together as expected.
DependenciesNo need for actual external systems or services.Requires interfaces and connections to external components.
Components TestedTreats the system as a black box.Tests interactions between specific integrated components.
Test DataUses realistic data to simulate real-world scenarios.Can use mock data to isolate integration points.
Defect IdentificationIdentifies system-level defects and issues.Identifies issues related to data flow and interactions.
Execution EnvironmentRequires a complete, standalone environment for testing.Can be executed in a controlled environment with stubs.
Timing in SDLCConducted after Integration Testing.Precedes System Testing in the testing phase.
Testing TechniquesBlack Box Testing, Acceptance Testing, Load Testing, etc.Top-Down Testing, Bottom-Up Testing, Big Bang Testing, etc.
Test DocumentationTest Plan, Test Cases, Test Summary Report, etc.Integration Test Plan, Integration Test Cases, etc.
PurposeTo ensure the entire system works as expected.To verify that integrated components interact correctly.
Bugs DetectedHigher level issues related to system functionalities.Interface issues, data flow problems, and module conflicts.

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I'm Priyanka. I have good knowledge of Software Testing. with this blog, by sharing Software Testing knowledge I'm contributing to our Software Testing community. and trying to connect to all the software testers worldwide with this blog.

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