No one pays attention to our interface engine, should we monitor it?

There was a time in healthcare information technology that many software vendors would state, "Interfaces do not take any resources, so you can just add them."  I wish I had a dollar every time I heard that!  YES, you need to be monitoring your interface engine.  Many things can go wrong with interfaces.  There are hardware performance concerns that should be monitored.  In regards to the interfaces, data can stop flowing so queues need to be monitored.  Also, the end point applications can change without notice which can cause the engine to process data with results that are not desired.
I recommend to all of our clients to have at least one person who is trained and responsible for interfaces and interface engines.  It does not have to be an employee, but can be outsourced if budget is a concerned.  I also recommend that when an employee is utilized to have a back up person trained as well for vacations.