For the convenience of Internet users, there are 16 search engines on the World Wide Web The first of these was Wandex, created in 1993, which served 623 sites that existed at that time With the increase in the number of online platforms and user needs, “Vandex” was replaced by Yandex and, later, Google Both software packages are most often in demand when entering key queries in Russia Therefore, domestic and foreign users happily celebrate Google’s birthday on September 27th Yandex appeared in 1993, and 2 years later it was integrated into the Internet Google domain registration was carried out in 1997 on September 15, the corporation - on September 7, 1998 The search engine itself began its work in 2000 The Google system arose on the basis of the scientific work of 2 Stanford students - Sergey Brin and Larry Page The young people were developing a digital library using the mathematical properties of the Internet and creating a structure of URLs in the form of a large web graph - a directed link from page to page It was this idea that L Page was advised to concentrate on by his supervisor, Terry Allen Winograd, a computer systems theorist, professor and artificial intelligence researcher at Stanford University His student, together with graduate student S Brit, created the PageRank search algorithm, which formed the basis of the Google software package By 1998, the system's search performance, thanks to E Bechtolshteim's investment of $100 thousand in the company's innovative technologies, was ahead of its competitors - overloaded web portals Users chose Google for its accessible interface and minimalist design In 2000, the search engine began selling text advertising, which was issued after analyzing key queries It loaded quickly, did not clutter the page, and did not irritate users This allowed the system to enter a new stage in the development of the Internet advertising market Today Google processes more than 3 billion requests every day At the beginning of 2020, the total capitalization of the corporation was 127 trillion dollars Google Inc receives income from the browser of the same name, the Gmail email service and other products The company acquired video hosting YouTube, the Earth Viewer project, which allows you to view images of the Earth from space in three-dimensional resolution, and Motorola Mobility However, the main focus of Google's activities and financial investments remains software development, as well as search, advertising and cloud Internet technologies