What is the purpose of integration testing in software testing?

The purpose of integration testing in software testing is to verify the proper functioning of different software components when they are integrated together. It aims to identify any defects or issues that may arise due to the interaction between these components. Integration testing ensures that the individual modules or units of software work together as expected and that the overall system functions correctly.

The main objectives of integration testing are:

1. To validate the interfaces and interactions between different software components.
2. To detect any defects or errors that may occur during the integration process.
3. To ensure that the integrated system meets the specified requirements and functions as intended.
4. To identify and resolve any issues related to data flow, control flow, or communication between components.
5. To assess the overall system performance, reliability, and stability.
6. To minimize the risk of failures or malfunctions when the software is deployed in a real-world environment.
7. To provide confidence in the quality and reliability of the integrated software system.

Integration testing can be performed using different approaches such as top-down, bottom-up, or a combination of both. It involves testing the interfaces, data exchange, and functionality between various modules or subsystems. This type of testing helps in uncovering defects that may not be identified during unit testing and ensures that the integrated software system is robust and reliable.

Overall, integration testing plays a crucial role in ensuring the seamless integration and proper functioning of software components, thereby enhancing the overall quality and reliability of the software system.