Alibaba Group Holding Limited (also known as Alibaba Group and as Alibaba) is a Chinese multinational technology company specializing in e-commerce, retail, Internet, and technology. 

Founded on 4 April 1999 in Hangzhou, Zhejiang, the company provides consumer-to-consumer (C2C), business-to-consumer (B2C), and business-to-business (B2B) sales services via web portals, as well as electronic payment services, shopping search engines and cloud computing services. It owns and operates a diverse array of businesses around the world in numerous sectors.

Alibaba is the world's largest retailer and e-commerce company, is on the list of largest Internet companies and artificial intelligence companies, is one of the biggest venture capital firms, and one of the biggest investment corporations in the world.

The company hosts the largest B2B (Alibaba.com), C2C (Taobao), and B2C (Tmall) marketplaces in the world. Its online sales and profits surpassed all US retailers (including Walmart, Amazon, and eBay) combined since 2015. 

According to en.wikipedia