作为一种技术革新,云计算对于全球经济和社会的影响不容忽视。云计算产业具有许多不同于传统产业的特点,给反垄断法的适用带来了新的挑战。网络效应、规模经济以及知识产权等因素决定了云计算产业的特点,而IaaS、PaaS、SaaS等云计算服务模式则带来了不同的限制竞争问题,这些现象值得中国反垄断执法部门重视。 As a technological innovation, the impact of cloud computing on the global economy and society can not be ignored. Cloud computing industry has many different characteristics from traditional industries, bringing new challenges to the application of antitrust law. Network effects, economies of scale and intellectual property rights determine the characteristics of the cloud computing industry. However, cloud computing service models such as IaaS, PaaS and SaaS bring different restrictions on competition. These phenomena deserve our attention from antitrust law enforcement agencies in China.