The answer is simple 'Promotion' that's it. A commercial allegedly designs a website that transmits all the details regarding its offerings and company details. But if this site is not properly promoted on the web then it is simply a waste web product. Search engines are the medium through which a user browses the net and for a site to be successful it has to have higher search engine rankings. SEO or the search engine optimization is one of the essential tools of Internet Marketing that ensures higher ranking of the webpage.