Search Engine Optimization (SEO) is the process of optimizing a website to help search engines better understand what the site is about. Google has complicated algorithms that determine how websites across the Internet rank. Google accounts for 83.49 of all search volume, with Bing coming in second at 9.19. Search index is mainly built through the work of software known as “crawlers”. These “crawlers” automatically visit publicly accessible webpages and follow links on those pages.