How the Google bot's Works?
 

How the Google bot's Works?

Crawling is the process by which Googlebot discovers new and updated pages to be added to the Google index. We use a huge set of computers to fetch (or "crawl") billions of pages on the web. The program that does the fetching is called Googlebot

Googlebot uses sitemaps and databases of links discovered during previous crawls to determine where to go next. Whenever the crawler finds new links on a site, it adds them to the list of pages to visit next.