SEO or Search Engine Optimization is simply the process of gaining traffic through free and organic search results on search engines. Google’ aim is to organize all the data or information on the web and offer it in such a manner that the best results are at the top. So, who decides what the best is? Google’s algorithm takes into record several factors, but the main signal is the number of websites that reference, or link, to the information. Every link is similar to a vote in the favor of the website informing Google that it is entitled to a higher ranking in the search engine.