API Testing and Validation with Postman

In modern software development, ensuring your APIs are reliable, secure, and performant is critical to building robust applications. This text-based course guides you through the process of verifying API behavior using Postman, the industry-standard tool for API development. You will start with the fundamental concepts of HTTP requests and API structures before moving on to writing automated validation scripts. By the end of this course, you will be able to confidently design test suites that catch errors early, validate data formats, and streamline your development workflow. What you'll learn: - Understand the core terminology of APIs, HTTP methods, and status codes - Configure requests, parameters, and headers within the Postman interface - Write test assertions to validate API response times, status codes, and payloads - Apply JSON Schema validation to ensure data structures meet exact specifications - Manage environment variables to secure sensitive API keys and credentials - Practice executing automated collection runs to test multiple endpoints sequentially The course begins with foundational API definitions and basic request structure, gradually introducing scripting, assertion libraries, and automated testing workflows. Each concept is reinforced with clear written explanations and practical code examples. This program is designed for beginners, developers, and QA engineers who want to learn API testing from scratch, with no prior automated testing experience required. Start reading today to build reliable, well-tested APIs.