API testing focuses on verifying the contract between services—making sure APIs return the right data, handle errors gracefully, and stay secure under different conditions. Since APIs act as the backbone of modern applications, even a small issue can cascade into major failures across systems.
One of the biggest advantages of API testing is speed. Tests can be run early, often, and without relying on the UI, which makes it ideal for CI/CD pipelines and microservices-based architectures. It also helps teams validate business logic, performance, and security at a much deeper level.
If you’re looking for a straightforward explanation with real-world examples and best practices, this api testing guide breaks it down clearly and shows how to build more reliable APIs.
How are you currently validating API reliability—manual checks, automated tests, or a mix of both?