An example of an application that does not work well in a simple cloud environment is a shared database, such as the typical Oracle database application, where the information is one big block of data that needs to be manipulated all the time by many computing processes and where access to the shared data needs to be synchronized and managed.
Youku has developed a sophisticated monitoring system: dozens of editors watch new material and classify it, building a video database that can be used to find good content, but also to block undesirable clips.