X

XML – Stands for eXtensible Markup Language. Similar to HTML (Hypertext Markup Language) in that it is primarily used to categorize various data for computers and humans to use more effectively. In basic terms, XML allows for customizable tags for marking up information that is otherwise difficult for computers to understand.

XML Sitemap – A document in XML format that categorizes all relevant pages, posts, files, etc. of a website. This document is not intended for human use, though it can be viewed by humans. Instead, an XML sitemap is designed to help search engine crawler bots easily find all of the pages for a given website – very similar to a roadmap or atlas that one would use when driving a car long distances.