云计算模型对于传统的信息技术工作方式产生了巨大的改变。与以往两次重大的信息技术变革,即客户端/服务器应用模式以及互联网的出现一样,推动云计算前进的两个重要动力就是可接入性以及成本。更简单的讲,就是如何才能让计算架构、平台和应用程序能够被更广泛的应用,以及如何让这些应用更廉价。实际上,这两者是相辅相成的:只要更廉价的技术出现,就会有更多人去使用这种技术。这两个驱动力对于小型企业来说是尤其具有价值的。随着技术越来越廉价,云技术可以让更多的小型企业采纳IT解决方案,从最简单 Cloud computing models have dramatically changed the way traditional IT works. And two major changes in information technology in the past, that is, client / server application model and the emergence of the Internet, to promote the two important driving forces of cloud computing is the accessibility and cost. More simply, it is how to make computing architecture, platforms and applications more widely available and how to make these applications cheaper. In fact, the two are mutually reinforcing: as soon as cheaper technologies come out, more people will use the technology. These two drivers are particularly valuable to small businesses. With technology getting cheaper, cloud technology allows more small businesses to adopt IT solutions, from the simplest