Extensible Markup Language (XML) is a versatile text format designed for data exchange and storage, derived from SGML. It is particularly beneficial for developers and professionals in various fields, including project management and finance. XML's flexibility allows it to adapt to a wide range of applications, making it a crucial tool in the development of custom, enterprise-grade applications. The platform also supports numerous integrations with popular applications such as Adobe FrameMaker and Eclipse IDE, enhancing its utility in diverse environments.

XML is structured around the efforts of the W3C, with a strong focus on formal technical specifications available through its Working Groups. This subscription-based service caters to a broad audience, including small businesses, nonprofits, and government organizations. Furthermore, XML provides comprehensive documentation for training, ensuring users can effectively utilize its features to meet their data management and application development needs.