API Testing & Debugging is the process of verifying that APIs (Application Programming Interfaces) function correctly, securely, and efficiently across different applications and systems. It ensures that data communication between servers, websites, mobile apps, and third-party services works smoothly without errors or performance issues.
This process includes testing API endpoints, request and response validation, authentication checks, performance testing, and error handling. Developers use tools such as Postman, Swagger, and automated testing frameworks to identify bugs, security vulnerabilities, broken endpoints, and data inconsistencies.
API debugging involves analyzing logs, monitoring server responses, fixing integration issues, and optimizing API performance to ensure stable and reliable functionality. Proper API testing and debugging help improve system reliability, enhance security, reduce downtime, and provide a seamless user experience across web and mobile applications.