HOW SEARCH ENGINES WORK
HOW SEARCH ENGINES WORK
There are three steps/ Primary function:
1. Crawling
Search engines have number of computer programs that responsible for finding information that available on internet. This programs are called crawlers.
- These programs scan the web and creates the list of websites.
- This programs visit each page and read the HTML code to understand :
Type of content
Keyword
Structure of the content
2. Indexing
At the second stage the information identified by crawlers needs to organized, sorted and stored.
If your website is not indexed then it will not be appear in any searches. The search engines not store all information on their index but they keep some element like:-
- Title and description of the page,
- Keywords,
- Type of content and number of incoming and outgoing link
3. Ranking
How search engine decides which website should be rank 1st, 2nd then 3rd and so on.
Buy using artificial intelligence and machine learning technology search engine made websites ranking decision.
Search engine algorithm analyze user query and finding matching pages.
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