Google is an advanced artificial intelligence which works on the principle of Machine Learning.Google marks up the first place in all the search engines around the world.It is launched in September 15,1997 a 20 years ago.It is available in 123 languages with 4.5 billion active users across the globe.It ranked 1st place by Alexa.
The principle of Google Search Engine is:
1.Crawling : Google may crawl your website,but not indexed daily.It sends spiders/crawlers/bots/robots to crawl your pages,blogs of your website.If your website is well ranked and has high domain and page authority then google crawls your website daily.It crawls and collects all the data in the back end of your website.
2.Indexing : Collected data of blogs,pages of your website are taken snapshots by crawlers/spiders/bots/robots.If your website is well ranked and has high domain and page authority then google index your website daily.It means gives only filtered data of your website.
3.Searching : The Google provides instantly generated results based on search engines.Principle of searching is to produce useful responses to the user.It follows Google Search Algorithms while searching.Based on the requirement of the user,it gives the accurate results.