As the amount of processing power that can be affordably invoked via the cloud continues to increase, applications that were once thought too impractical to build are suddenly quite feasible. A good example of that is AppStream, a new service that Amazon is beta testing that allows graphically and resource-intensive applications to be extended out to any number of devices that previously would not have had the processing capabilities to run them.
Can you locate any public or internal document that is on the internet or your intranet throughout your company? Once you get past a certain size, the Searchbox REST API makes that possible through access to its search services via the cloud or onsite. The API indexes raw content from a variety of sources.