What exactly is search engine optimization: The major search engines of the world have two major functions. They are that of crawling and building an index. Also the major search engines of the world supply answers to the queries made by the users so that the most relevant results are displayed, the search engines calculating relevancy on its own. Each unique document is and indexed by the search engines. And it is through links the search engines which are actually automated robots called “crawlers” and “spiders” reach the billions of interconnected documents. Once the search engines find the web pages they interpret the code and store these web pages in massive hard discs to be put forth later when required. The search engines have data centers all over the world to help the users gain information about anything they want in a fraction of a second. Search engine optimization influences the “relevance” and “importance” and displays search page results according to it.

Among the search engines, according to a study made in two thousand and, the Google sites were the leader in searches made in the US core search market occupying a market share of sixty five percent of the searches conducted. The Google sites are followed by Yahoo sites( seventeen and a half percent) and Microsoft sites( thirteen percent) .

A few lines about the functioning of search engines: It is true that without correct means of search engine optimization web pages of companies would remain invisible to the search engines as well as to the general public. The major search engines of the world though are actually automated robots and have considerable amounts of drawbacks which are actually visible in poor link structure so that the web pages are considered unimportant when the search engines index the pages. Though the conditions are getting better all the time and the search engines are just doing a great job at interpreting non HTML text still it is difficult for the search engines to read content in rich media. The different search engines calculate relevancy of search engines by different factors. They are that of content, performance, authority and user experience. By content the search engines mean the text on the page, and the titles and descriptions that are given. The search engines also take into account the factor of performance by which it is meant how fast the site performs. The search engines check the authority of the site by confirming that the site has a quality content which is capable of being used as a reference site. The user experience is also of prime importance. If purchased links happen to be on a web site the search engines tries and avoids indexing it. Moreover the Meta description is of extreme importance and the title tags should be paid attention.