What is Search Engine and How its work

Search Engine are program that search documents for specified keywords and return a list of documents where the keyword were found. A search engine is really a general class of programs, However term is often used to specifically  describe system like google,bing, yahoo search that enables user to search for documents on the world wide web.

How Search Engine Works

  1. The Search Engine use robots (also known as spiders) to search the internet for websites.
  2. The result of spiders travels are put in an data base which is then indexed based on words found and where these words were found.
  3. The user of search Engine search for words or phrases related to what they are looking for and the search engine index return related sites.


When ever you enter a query in a search engine and hit ‘ENTER’ you get a list of web result that contain that query term. User normally tends to visit website that are top of the list as they perceive those to be more relevant to the query. If you have ever wondered why some of these websites rank better than the others then you must know that it is because of powerful web marketing technique called Search Engine Optimisation(SEO).

Seo is a technique which helps search engine find and rank your site higher than the millions of other sites in response to search query. Seo thus helps you to get traffic from search engines. Search Engine Optimisation refers to the collection of techniques and practice that allow a site to get more traffic from search engine (google,yahoo,bing ).


  1. On page SEO
  2. Off page SEO