Introduction
Application integration at its simplest is often just one application sending a message to another to notify it of some change. Perhaps when a patient arrives at a hospital, the registration system will send a message to clinical systems so they have all demographic data ready to use. Of perhaps it is just a nightly file transfer from the sales system to the accounting system.
But modern application integration platforms or suites can do a lot more than this to help applications work together and add real value to the enterprise.