eXtensible Markup Language, or XML, is a versatile markup language designed to store and transport data. It is both human-readable and machine-readable, making it an ideal choice for data interchange between systems. XML allows users to define their own tags, providing flexibility in how data is structured and represented. One of the key features of XML is its ability to facilitate the sharing of structured information across diverse platforms and applications. This has made it a popular choice in various fields, including web development, data storage, and configuration files, enhancing interoperability among different systems.