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Difference between System Testing and Integration Testing

Software is a key success factor for many businesses across departments like Accounting and Finance, HR, R&D, Sales, and Production. However simply developing the software is not adequate. It has to be thoroughly tested for all performance metrics. Not using testing to run your development project is hardly a peril you can afford to take in today’s times of cut-throat competition. System testing and integration testing offer two very good avenues to plug in any issues and avoid mishaps post release. Get to know these different forms of testing and what benefits do these provide - 

Key Types of Testing

1. System Testing

System testing is the mechanism used in the testing of a completely integrated system to verify and ensure it meets the defined means or specified requirements. What this means is, during system testing the entire system will be tested as a whole to make sure it complies with the desired outcomes.

2. Integration Testing

Integration testing involves the combination individual software modules to test them as a group. However, before integration testing, your software professionals need to conduct unit testing to check the credibility of every module.

Main Differences between System Testing and Integration Testing

A] What do they focus on?

System Testing – It will always concentrate on functional and non-functional testing. This includes testing of security, load, recovery, performance and stress.

Integration Testing – When it comes to integration testing, the main focus is functional testing. That is, how two modules should be combined and tested in the form of a group.

B] Where do they start?

System Testing – It is supposed to start from requirement specifications. This is because it is meant to check whether the system works properly in accordance with the requirements set.

Integration Testing – On the other hand, integration testing begins with the interface specifications. This way, it is possible for software engineers to determine whether or not the different software modules are capable of integrating efficiently.

C] What do the professionals pay attention to?

System Testing – The persons conducting system testing have to focus on the functionality of the system when it comes to system testing.

Integration Testing – In case of integration testing, the testers need to pay attention to how well the modules integrate with each other.

D] What happens first?

System Testing – Before conducting system testing, it is essential for the testers to perform integrated testing.

Integration Testing – Prior to integrated testing, unit testing is compulsory, only then can the testers proceed to test the integration capacity of individual software modules.

E] Visibility testing

System Testing – For system testing, there is no visibility testing conducted with regards to the code.

Integration Testing – It involves the testing of the visibility of the modules integration structure.

F] Level of testing

System Testing – It is considered to be high-level testing because it takes place after the integration testing process is completed.

Integration Testing – This testing is a low-level testing because it is involved in the initial stages of software testing.

You can easily optimize the entire software development lifecycle by making a judicious and budget friendly decision based on these two critical forms of testing.

Intellika Team

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