Software testing is the systematic process of evaluating and verifying that an application functions correctly, meets specified requirements, and is free of defects before it reaches end users. This essential part of the software development lifecycle reduces development costs, improves performance, and protects against security vulnerabilities.
- Unit Testing: Evaluates individual code functions, methods, or isolated modules, usually managed directly by developers.
- Integration Testing: Checks how different modules or systems interact and pass data to each other.

