Alibaba is the world's largest online and mobile commerce company, measured by GMV (CNY 5.7 trillion/$846 billion for the fiscal year ended March 2019). It operates China's most-visited online marketplaces, including Taobao (consumer-to-consumer) and Tmall (business-to-consumer). Alibaba's China marketplaces accounted for 68% of revenue in fiscal 2019, with Taobao generating revenue through advertising and other merchant data services and Tmall deriving revenue from commission fees.