It is common practice for Internet users to not browse pages of search results, so where a site ranks in a search is important to directing more traffic toward the site. The higher a website ranks in results of a search, the greater the chance that site will be visited by more user.
Search engine optimization is a methodology of techniques and tactics used to increase the flow of visitors to your website by obtaining a high-ranking placement in the search results page like Google, Bing, Yahoo and other search engines.
Good SEO helps to ensure that a site is ranking at the top of a search engine results and improves the chances that the site will be found by the search engine. SEO is typically the best practices that webmasters and Web content producers follow to help them achieve a better ranking in search engine results.