What is XML?

XML, or Extensible Markup Language, is a markup language that provides rules for defining data in a structured way. It is used to store, structure, and exchange data electronically between different systems and applications.  

How does it work?  

XML uses tags to describe the structure and meaning of data, with a focus on content and structure. Examples of content: customer, name, address, etc. An XML file has a specific hierarchy.  

What are the advantages?  

XML can be read and understood by both humans and computers. XML is flexible: it is highly adaptable for defining data structures and can therefore be used for different applications. Moreover, this language is consistent, and therefore predictable and reliable.