What is SEO and How it Works?

SEO - SEO Stands For "Search Engine Optimization", which improves the search results in Google.SEO is the Technique to increase the visitors on your website in SERP's like Google, Bing, Yahoo, AOL. Basically SEO helps you increase the Traffic, page rank and authority of your website. The Process is shown below:

Example :  If we search pizza online the results on first page in Google is shown below:

SEO Techniques : SEO Techniques are classified into the Two Broad Categories

1.     White HAT SEO
2.     Black HAT SEO

1. White Hat SEO : It is a technique which search engine recommends as part of Good SEO. It is purely clean SEO, which don't include keyword stuffing ,stemming or duplicate content ,mirror sites.

2. Black Hat SEO: It is a technique which Google don't recommend to do and is also known as Spamming.The techniques which are used are unrelated keywords,keyword stuffing ,hidden links,duplicate content, mirror sites,blog spamming and many more.

Comparison Between Black and White Hat SEO :

How Search Engine Works ?

There are 5 steps how search engine works.The steps are :

• Crawling
• Indexing
• Processing
• Calculating Relevancy 
• Retrieving Results

Crawling - It is the process where Google fetch all the web pages, which are linked to the website and this task is done by the software called crawler or spide (or Googlebot, in case of Google).


Indexing - After the crawling the Google create index of all the fetched pages and keep into the database from where it can retrieve later . The results depends on the keywords what we searching into Google


Processing - After Indexing, when a search request comes, than processing is performed and Google compares the search string on the  search request with the indexed pages in the database.


Calculating Relevancy - Now Google calculates the relevancy  of each and every page, which depends on the Search string.

Retrieving Results - The last step in SERP's is retrieving the Results which matches best to the search string.