As a QA tester, working with XML is essential, especially for API testing, data validation, and automation . Today, I explored the key concepts every QA should know about XML. 🔹 What is XML? XML ( eXtensible Markup Language ) is used for storing and transporting data in a structured format. It’s widely used in APIs (SOAP), test data, and configurations . 🔹 Why QA Testers Should Learn XML? ✅ API Testing – SOAP APIs use XML for requests & responses. ✅ Test Data Handling – XML is used in test scripts, Selenium, and data-driven testing. ✅ Config Files – Many automation tools (TestNG, Jenkins) use XML for setup. 🔹 Key XML Concepts for QA 📌 XML Structure – Elements, attributes, nesting, and schema validation. 📌 XPath – Used for locating XML nodes in automation & API testing. 📌 XML Schema (XSD) – Ensures data correctness in APIs. 📌 Parsing XML – Reading & extracting values using tools like Postman, Python, or Java . 💡 Where to Learn XML? 📖 W3Scho...