What is XML?
XML is an acronym for Extensible Markup Language. This language uses tags to add information to files, which both machines and humans can read.
More About XML
You can use XML to store, transmit, and display data. Web developers can use XML to store information in plain text, making data easy to import and export.
You can also import theme unit test data as an XML file, which provides testing data for an entire website. If you need to migrate your WordPress website, you can export your content in an XML file.