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Difference between System Testing and End-to-end Testing

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Introduction :

System Testing and End-to-end Testing are two different types of software testing that are used to ensure the quality and functionality of a software system.

System Testing is a type of testing that is performed on the complete system or software application to evaluate its behavior and performance. It is generally conducted after the completion of the integration testing phase and is carried out in a production-like environment. The primary objective of System Testing is to identify defects or bugs that may have been missed during the earlier phases of testing and ensure that the system meets the specified requirements.

On the other hand, End-to-end Testing is a type of testing that evaluates the entire software system, including its integration with other systems or external interfaces. It is typically performed in a simulated production environment and involves testing the software from the user’s perspective. The objective of End-to-end Testing is to ensure that the software system meets the customer’s requirements and expectations and that all components work together seamlessly.

System Testing: System Testing is carried out on the whole system in the context of either system requirement specifications or functional requirement specifications or in contest of both. System testing tests the design and behavior of the system and also the expectations of the customer. System testing: System testing is a type of testing that validates a complete and fully integrated system to verify that it meets the specified requirements. It typically includes functional testing, performance testing, security testing, and other types of testing to ensure that the system is working as expected.

End-to-end Testing: End-to-end testing is a type of software testing used to test whether the flow of a software from initial stage to final stage is behaving as expected. The purpose of end-to-end testing is to identify system dependencies and to make sure that the data integrity is maintained between various system components and systems. End-to-end testing: End-to-end testing, also known as end-to-end functional testing, is a type of testing that validates the flow of a system from start to finish. It simulates the real-world use of the system and tests it as a whole, including testing the interactions between different components.Difference between System Testing and End-to-end Testing:

System Testing End-to-end Testing
In system testing, whole software or application is tested at a time. In end-to-end testing, behavioral flow of the software is tested.
Tests the system as a whole, including individual components and their interactions  Tests the system as a whole, including its integration with external systems and interfaces
 
Typically conducted in a controlled environment, such as a testing lab  Typically conducted in a simulated production environment
 
Focuses on evaluating the behavior and performance of the system  Focuses on evaluating the user experience and functionality of the system
 
Primarily tests the internal functionality of the system  Tests the external functionality of the system
 
Performed after integration testing and before acceptance testing  Performed after system testing and before acceptance testing
 
Involves functional and non-functional testing  Involves functional testing and end-to-end flow testing
 
Testers use test cases and scenarios based on system requirements  Testers use real-world scenarios based on customer use cases and user stories
 
Objective is to identify and eliminate defects in the system  Objective is to ensure that the software meets customer requirements and expectations
 
Provides a comprehensive understanding of the system’s quality and readiness for deployment  Provides assurance that the system will function as expected in the production environment
System testing only tests the specific software system. It tests the software system and the connected systems both.
The functionality of the software is tested. Flow from end-to-end is tested.
It validates the software system as per standards and specifications. It validated all the interfaces of the software.
Knowledge of interconnected systems is not required. Knowledge about interconnected systems is required.
It is carried out once integration testing is performed. It is performed after the system testing.
It is performed both manually and automated. It is generally performed manually.
It is the super set of end-to-end testing. It is considered as subset of the system testing.
 System testing is usually a higher level of testing,  end-to-end testing is a lower level 
System testing is usually done in a testing environment that closely mirrors the production environment,  end-to-end testing is typically done in an environment that mimics the real-world usage.
System testing typically has a broader scope than end-to-end testing, as it covers all aspects of the system, including its functionality, performance, security, and other features. End-to-end testing focuses on the flow of the system, and how all components interact with each other.

Last Updated : 08 May, 2023
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