Alibaba Group Holding Limited, also known as Alibaba Group and Alibaba.com, is a Chinese multinational technology company specializing in e-commerce, retail, Internet, and technology. Founded on 28 June 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 portfolio of companies around the world in numerous business sectors.