A site map (or sitemap) is a list of pages of a web site accessible to crawlers or users. It can be either a document in any form used as a planning tool for web design, or a web page that lists the pages on a web site, typically organized in hierarchical fashion.In short we can say Sitemaps are an easy way for webmasters to inform search engines about pages on their sites that are available for crawling.Using sitemap search engines or any web crawler can find specific address of specific page.or specific link.

We can say site map is the index page of your website.Some of you probably know that Google’s Webmaster Guidelines include multiple references to sites maps, which mean that site maps must be important.site map is very important thing for SEO because site map make it easier for search engine spiders to discover and crawl every page of your website. That is why the bigger the sitemap is the better.However, sitemaps are still not the only way to optimize your website.