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Definition of 'System Testing'

Definition: System testing is defined as testing of a complete and fully integrated software product. This testing falls in black-box testing wherein knowledge of the inner design of the code is not a pre-requisite and is done by the testing team.

Description: System testing is performed in the context of a System Requirement Specification (SRS) and/or a Functional Requirement Specifications (FRS). It is the final test to verify that the product to be delivered meets the specifications mentioned in the requirement document. It should investigate both functional and non-functional requirements.

There are various types of system testing and the team should choose which ones they would need before application deployment.

Here are some the types of system testing software development companies use:

1. Usability Testing - To test if an application or product has good user experience or not.

2. Regression Testing - To confirm that a code change or addition has not adversely affected existing features.

3. Load Testing - It is a type of non-functional testing which helps understand the behaviour of the application under a specific expected load.

4. Functional Testing - It is a type of testing to verify that a product performs and functions correctly according to user specifications.

5. Migration Testing - Testing of programs used to migrate /convert data from one application to another replacement application.

6. Compatibility Testing - It performed to validate that software performs same behaviour with different environment.

7. Boundary Value Testing - It is designed to include representatives of boundary values.

8. Fuzz Testing - It is used to provide invalid, unexpected, or random data to the inputs of a program.

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