Yahoo is a famous Internet portal in the United States and one of the creators of Internet miracles at the end of the 20th century. Its services include search engines, emails, news, etc., with operations in 24 countries and regions, providing diversified network services to more than 500 million independent users worldwide. It is also a global Internet communications, commerce and media company. Yahoo is the world's first website to provide Internet navigation services. Yahoo is the oldest "category" search database and one of the most important search service websites.