This document talk about the how the search engine works. I tried to explain the search engine, Crawler and Indexing functionality. I hope you will find this document useful to understand the webpage indexing and ranking in Search Engines.

1. How Search Engine works?
Hello readers, every person do the search on the Search Engine like Google, Bing, Yahoo and others.
Does anybody think how search engine works? Mostly we are more attentive to the results not to the
background works that search engine perform.
I tried to explain the search engine function very briefly below:
Let’s start from the website indexing to the search engine. Search engines pick the website from WWW
(World Wide Web) and do the indexing as below;
How the crawlers index the website?
This is best explained into the video (http://www.youtube.com/watch?v=0SIXO4E5Yyg ).
Brief: Indexing the website simply means that putting WebPages into a big datacenter of search engine
by categorizing them on behalf of several factors. Bots index the page in several means where few are
important.
 Title in Keywords
 Page content Keywords (Broad Match & Phrase Match and sometime Exact Match)
 Meta Data
 Alt Tags
What after indexing?
All Indexed WebPages are sent to search engine data center which is followed by filtering on the basis of
popularity of the web page. Again several factors are available which decide the page popularity few are
given below;
 Search Engines Qualification
o Page title
o Keywords in page content and its readability (Content Quality)
o Keyword density
o Search engine friendly URL’s
o Spam Testing
o Many others…
 Reference (Inbound link to the website page)
---- Many More Factors

2. How the search results knock to the SERP (Search Engine Result page)?
Now, let’s understand how the organic result flash on the search engines.
Let’s make the steps in Bullet point to understand it better.
1. User Place his Query into search engine.
2. Query goes to Search Engine Data Center for Refining your Search.
3. Related page get shortlisted.
4. Ranking given to pages on the basis of Search Engine Parameter (Relevancy)
5. Result Display on the SERP (Search Engine Result Page).