It is very helpful in business process management because in an organization there are so many file systems and document resides and to get a particular data or file from the system is a very difficult task and this issue can easily solve by this application. It is quite similar to universal search used by Google and other search engine.
This application used very frequently in all most all domains like Business, Travel, Shopping, Software etc. In business domain it used to maintain the document and records for find data in a quick way. If we discuss about shopping it is used to present the products by a single query search. In travel case it is used to provide the particular package or services needed by their customer in a easy way.