Difference between system, Integration and E2E test?

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What's the difference between System testing and End-To-End testing?

  • In system testing, whole software or application is tested at a time where as In end-to-end testing, behavioral flow of the software is tested.
  • Typically conducted in a controlled environment, where as in E2E it conducted in a simulated production environment.
  • In System Testing it involves functional and non-functional testing where as in E2E it involves in functional testing and end-to-end flow testing.
  • In System Testing the objective is to identify and eliminate defects in the system where as in E2E it is to ensure that the software meets customer requirements and expectations.
  • System testing is usually done in a testing environment that closely mirrors the production environment, where as end-to-end testing is typically done in an environment that mimics the real-world usage.
  • In System testing testers use test cases and scenarios based on system requirements where as in end to end testing testers use real-world scenarios based on customer use cases and user stories.


What's the difference between end-to-end testing and integration testing?

Both integration and end-to-end testing are higher-level tests in the agile testing pyramid, but they serve different purposes and have distinct characteristics. Some key differences between them include:

  1. Focus: Integration testing ensures that app components work well individually and together, while end-to-end testing evaluates the product as a whole from the user's perspective.

  2. Timing: Integration testing begins during the early stages of development, detecting bugs early in the cycle, while end-to-end testing is often executed when the product is almost ready for release.

  3. Speed: Integration tests typically run faster than end-to-end tests.

  4. Purpose: Integration tests are used primarily for testing a single process from third-party software that will be used in conjunction with the main software, while end-to-end tests can be used for a single process executed from start to finish or for different processes involving multiple applications.

  5. Scope: Integration testing spans multiple components but often not across the entire stack, while end-to-end testing has a wider scope, covering the entire app technology stack.

  6. Cost: Integration testing is generally less expensive than end-to-end testing, which is costlier in terms of both hardware and software.

  7. Task incorporation: Integration testing is easier to incorporate with daily builds and simpler to test in the development environment, whereas end-to-end testing cannot be performed until software development is nearly complete.

What's the difference between System testing and Integration Testing?



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