XML stands for eXtensible Markup Language.

XML was designed to store and transport data.

XML was designed to be both human- and machine-readable.

Data format (“UNIVERSAL”) used for structured document exchange.

XML plays an important role in many different IT systems.

XML is often used for distributing data over the Internet.

It is important (for all types of software developers!) to have a good understanding of XML

Example

<?xml version="1.0" encoding="UTF-8"?>
<site>
 <name>PHPCodez</name>
 <url>phpcodez.com</url>
</site>