Software testing involves various types of testing to ensure the quality, functionality, and performance of a software application. Here are some common types of software testing:

1. Unit Testing:

   • Involves testing individual units or components of the software in isolation. The goal is to ensure that each unit functions as intended. Unit testing is often automated and is a fundamental part of test-driven development (TDD).

2. Integration Testing:

   • Focuses on testing the interactions between different units or modules of the software. It aims to detect defects in the interfaces and interactions between integrated components.

3. System Testing:

   • Tests the entire software system as a whole. It verifies that the integrated components work together correctly to meet the specified requirements. System testing includes functional and non-functional testing.

4. Acceptance Testing:

   • Validates whether the software meets the acceptance criteria and is ready for deployment. It includes User Acceptance Testing (UAT) where end-users verify that the software meets their needs.

5. Regression Testing:

• Ensures that new code changes do not adversely affect existing functionalities. It involves re-running previously executed test cases to verify that existing features still work as intended.