Difference between System Integration Testing (SIT) and User Acceptance Testing (UAT)
System Integration Testing (SIT):
For a better understanding of what is SIT first, we must understand what is System integration. so basically as the name itself suggest system integration refers to a set of phases where various components are incorporated into a single unit, and these units go for integration testing, the group of interaction between component is referred to as integration and testing these interaction and modules interaction is known as integration testing.
From some other point of view, the SIT (system integration testing) is considered the combination of integration testing and system testing. At this point, we know what integration testing is. Now, we need to understand what system testing is. The testing performed on the absolute integrated products to check system compliance with specified requirements on functional and non-functional elements is referred to as system testing.
SIT is also considered a combination of integration testing and system testing.
User Acceptance Testing (UAT):
UAT (User Acceptance Testing) is conducted at the end of the whole testing process when the product is ready to deliver. The main aim of software development is to develop software that is capable of satisfying user needs, rather than just fulfilling the system specifications.
UAT is conducted when the product is ready to deliver it is also called as at the end of the whole testing process. UAT is used to validate whether the system is acceptable or not.
UAT validates that:
- The developed system fulfills the system requirement specifications
- The system has achieved the performance as documented in the system requirement statement.
- It could vary as defined in the contract.
So come to the table which refers to the necessary comparison:
|S. No.||Comparison Parameter||SIT||UAT|
|1.||Basic of Testing||SIT refers to the interfacing between the modules.||UAT focuses on the requirements from the user’s point of view.|
|2.||Performed By||SIT is performed by Developers and tester||UAT is performed by Customers and end users|
|3.||Testing order||After unit testing but before system testing||At the end after system testing|
|4.||General issues||Problems like data flow, control flow, etc.||Functionality issues or non-working features according to the user requirement.|
|7.||Testing for Functionality||For the system to function by the specifications, integration of the individual units done and then tested.||In UAT, the entire system is examined for compliance with the intended user’s primary functionality.|
|Feature||System Integration Testing (SIT)||User Acceptance Testing (UAT)|
|Purpose||Verify the interactions between software systems or modules||Verify if the software meets the business and user requirements|
|Focus||Testing interfaces between various systems or modules||Testing if the software meets user needs and business objectives|
|Test Environment||Simulated and controlled environment||Real-world environment|
|Test Scenarios||Emphasis on testing the integration of various systems||Emphasis on testing the software’s usability and user experience|
|Test Data||Uses test data to simulate module interactions||Uses real-world scenarios and user data|
|Test Duration||Conducted over a longer duration||Conducted over a shorter duration|
|Outcome||Identifies defects and bugs in the system’s interfaces||Identifies if the software meets user needs and business goals|
|Testing Techniques||Black-box and White-box testing||Black-box testing|
|Test Execution Approach||Incremental approach, testing one module at a time||Comprehensive approach, covering all user scenarios|
|Tools and Technologies||Test management tools, defect tracking tools||Test management tools, defect tracking tools|
|Risk and Impact||Focuses on risks associated with module interactions||Focuses on risks associated with user needs and business goals|
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