What is XML?
Blog post from Postman
XML, or Extensible Markup Language, is a versatile data exchange format that is both human-readable and machine-readable, commonly used for structuring complex and deeply nested data. It employs a hierarchical structure with components such as tags, elements, and attributes to organize data, making it suitable for industry-specific data formats due to its extensibility. XML's structured format and established standards facilitate interoperability between different systems, particularly in API contexts, where it can be used for both sending and receiving data within platforms like Postman. Despite its benefits, XML's verbose syntax and complexity can lead to challenges such as larger document sizes and increased parsing overhead compared to more lightweight formats like JSON, which uses a simpler key-value pair structure and supports native data types like strings and numbers. XML remains valuable for scenarios requiring detailed data relationships and compatibility across diverse systems, especially in regulated industries with established XML standards, but its resource demands may affect performance in applications requiring low-latency data exchange.
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