SOS Ltd. is a holding company, which provides marketing data, technology and solutions to the emergency rescue services in China. It focuses on the research and development of big data, cloud computing, Internet of Things, block chain and artificial intelligence. The firm created a SOS cloud emergency rescue service software as a service (SaaS) platform with three major product categories, including basic cloud (medical rescue card, car rescue card, financial rescue card, mutual assistance rescue card), cooperative cloud (information rescue center, intelligent big data, intelligent software and hardware), and information cloud. The company was founded by Zheng Yu Wang and Andrew Mason in 2001 and is headquartered in Qingdao, China.