Search engine optimization is the process that plays a crucial role in the success and high profit of small, medium as well as large businesses. After the survey, it proves that to boost the revenue and increase the sales, SEO become the essential tool for every marketer and businessman. If you are unaware about what is this search engine optimization and why companies are running to hire the SEO experts then this article assist you in getting the relevant information about this term. SEO is all about optimizing the website for Google, Bing, Yahoo and other search engines so that it can appear on the first page of search engine result page (SERP). For this purpose, many advanced technologies and methods are used that can easily improve the visibility of web portal. Getting the high ranking is not an easy task because ongoing changes to search engine algorithm make it difficult for the businessman to find out how the search engines works. To appear on first page, it is essential to choose the best SEO Company India that know about every update of Google’s algorithm and provide the guaranteed ranking by working in accordance with these changes. First of all, search engines perform crawling by fetching all the web pages linked to a website and then index all these pages into the database for the later retrieval.