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APIs power everything—from your favorite apps to critical business systems. But what happens when your API is subjected to large or unexpected traffic, security threats, or plunges under load? One weak link can destroy UX, destroy data or take down your service.

Many API security tests create a false sense of safety by focusing on known vulnerabilities and static checks, missing how attackers exploit logic flaws, privilege escalations, and business logic abuse. Clean reports often hide real risks.

Whether you’re a Software Developer, DevOps Engineer, or Quality Assurance (QA) specialist, mastering API testing with tools like Postman is essential, especially during development. API testing using Postman makes it possible to increase security, provide better user experiences, and minimize the possibility of losses through bugs or vulnerabilities.

Welcome to the beginner’s guide to API testing! In this guide, we’ll guide you through the basics of API testing, its importance, best practices, and popular tools.