Baidu, Inc. is a Chinese multinational technology company specializing in Internet-related services and products and artificial intelligence , headquartered in Beijing's Haidian District. It is one of the largest AI and Internet companies in the world. The holding company of the group is incorporated in the Cayman Islands. Baidu was incorporated in January 2000 by Robin Li and Eric Xu. The Baidu search engine is currently the fourth largest website in the Alexa Internet rankings. Baidu has origins in RankDex, an earlier search engine developed by Robin Li in 1996, before he founded Baidu in 2000., Baidu offers various services, including a Chinese search engine, as well as a mapping service called Baidu Maps. Baidu offers about 57 search and community services, such as Baidu Baike , Baidu Wangpan , and Baidu Tieba ., Baidu Global Business Unit is responsible for Baidu's international products and services for markets outside of China. Baidu GBU's product portfolio includes keyboard apps Simeji and Facemoji Keyboard, content recommendation platform popIn, augmented reality network OmniAR, Japanese smart projector popIn Aladdin, and ad platform MediaGo, which is focused on Chinese advertisers looking to reach overseas users. In 2017, Baidu GBU entered into a partnership with Snap Inc. to act as the company's official ad reseller for Snapchat in Greater China, South Korea, Japan and Singapore. The partnership was extended in 2019., In 2018, Baidu divested the "Global DU business" portion of its overseas business, which developed a series of utility apps including ES File Explorer, DU Caller, Mobojoy, Photo Wonder and DU Recorder, etc. This business now operates independently of Baidu under the name DO Global., Baidu has the second largest search engine in the world, and held a 76.05% market share in China's search engine market. In December 2007, Baidu became the first Chinese company to be included in the NASDAQ-100 index. As of May 2018, Baidu's market cap rose to US$99 billion. In October 2018, Baidu became the first Chinese firm to join the United States-based computer ethics consortium Partnership on AI.