Applications that consist of pieces of other applications. Composite applications bring this information together in one place. For example, salespeople have disparate software applications that make it possible to do their jobs: software for contacts, ERP, a file system, and so on. May also be called custom applications, portals, Web applications, Web services, or complex applications.
[Adapted from Intranet Journal]
Recommended Reading: The Difference Between CRM and ERP