Web Oom

Excerpt from here
Cloud computing is a general term for anything that involves delivering hosted services over the Internet. These services are broadly divided into three categories: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS). The name cloud computing was inspired by the cloud symbol that’s often used to represent the Internet in flow charts and diagrams.
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Google App Engine lets you run your web applications on Google’s infrastructure.
It is kind of web hosting server I think.
Django can be also served with google app engine.