Search Engine Optimization ( SEO ) is a process of making a website or a portal to be Search Engine Friendly, to bring that particular website or a portal with the Top Ranking on a Search Engine Ranking Page ( SERP ) as top as possible for a query raised while surfing. It is an amazing and a one and only No-Cost Internet marketing technique and as of now no business focused website or a portal can expect a automated business through internet, unless doing a Search Engine optimization for their website. Search Engine Optimization is the only one tool, if a person needs to take his business every part of the world without spending any extra money. SEO is a key for any business who target clients all over the world.

Why and How?.

A business house in a small town of a country might be having a well explaining website, but the question is who knows that he is having a website and what's the web address?. Is it possible for him spreading out his website to each and every person in the world?. The answer is simple and a big NO. Here comes Search Engines and play a vital role of connecting the business houses and persons who search for them. Search Engines list out the websites of the business houses to the persons who search for them based on the queries they received from a net surfers.

How Search Engines Work?.

By submitting a website on search engines, every web page of the website is getting read by the search engine's software called spiders and crawlers and then they are getting stored on the search engine's server. When a person makes a query for his particular search, search engine matches the query and content of the web pages stored in their server and brings out a list of web pages on its result pages. Based on the query and the stored web pages, a particular search may have numerous web page results.

The top ranking in the result pages depends on the search engines optimizing methodology and slightly differs. As of now there are three major search engines - Google, Yahoo and MSN are there and they have their own database and search algorithms. Every search engines have their own algorithm and logics for ranking. s For example Google prefer ------------------ where as Yahoo is not bothered.

Search Engine Architecture

They have Six components and they are Spiders – downloads web pages, Crawlers – Follows links of the web pages , Indexer – analyses the downloaded web pages, Database – Places to store processed web pages, Result Engine – to extract results from database and web server – a major component interacts between user and other search engines. Check Out the SEO Process Diagram to know How Search Engine Works?.