Search Engine Optimization (SEO) is the process of getting the online visitors to the website or a web page in an unpaid result which is called natural, organic visitors. In general, higher ranked search result and frequently a site appears in the search results list and the visitors receive from the search engine users and the visitors can be converted into customers. SEO mainly target on different kinds of search including image, video, academic and news search. SEO differs from local search engine optimization that later focused on optimizing business which will be displayed by the search engine.