XML
XML is a structured file format used to store information in clearly defined fields and exchange it between different systems. The abbreviation stands for Extensible Markup Language and describes a standardised way of organising data in a machine-readable form. XML is often used when content is transferred, imported or processed further via an interface. The format simplifies data exchange because both structure and content are described clearly, allowing different applications to interpret the data reliably. This becomes clear when an e-invoice is created in XML and passed to another system for automated processing.