About Site Maps
In its simplest terms, a Site Map is a list of the pages on your website.
In general, there are two types of site maps. The first type of site map is a HTML page listing the pages of your site—often by section—and is meant to help users find the information they need.
XML Sitemaps—usually called Sitemaps, with a capital S—are a way for online publishers to give Search Engines information about the information their website contains.