API Testing
Postman has become synonymous with API testing for many developers. SoapUI has been the enterprise standard for SOAP services for over a decade. If you are choosing between them — or wondering whether you need both — this comparison will give you a clear answer. The short version: Postman wins for REST
API Testing
Postman collections are useful for manual API testing. Newman — Postman's command-line runner — makes those same collections run in CI/CD. Every push triggers the full API test suite, reports go into your build artifacts, and failures block merges. This guide covers setting up Newman in CI/CD:
API Testing
Postman mock servers create a fake API endpoint that responds to requests with predefined data. They're useful for two scenarios: building frontend code before the backend API exists, and testing how your code handles specific API responses (including edge cases and errors) without needing to orchestrate the real
API Testing
The Postman Collection Runner lets you execute an entire collection of API requests in sequence, with test assertions, environment variables, and iteration support — all from the Postman GUI. It's the starting point for API test automation before you move to CLI tools like Newman. Opening the Collection Runner
API Testing
Most Postman users write basic tests — pm.response.to.have.status(200) — and call it done. Postman's scripting layer goes much deeper: pre-request scripts that generate dynamic data, test scripts that chain requests, and data-driven testing that runs a collection against hundreds of inputs. This guide
API Testing
REST Assured and Postman both test REST APIs, but they solve different problems for different audiences.