API Testing Mastery: The Overlooked Path to QA Excellence

While most QA engineers focus on UI testing, the real product lives at the API layer—where business logic, data contracts, and validation rules are executed. API testing isn't a secondary skill but the core competency that separates production incidents from quality assurance. By mastering tools like Postman and Charles Proxy, you can shift from testing what users see to validating what the system actually does.