I think I've only heard that term while shopping for a car (the salesmen kept saying he'd have to clear the deal through the "back office")...he was lying...but

I think I've only heard that term while shopping for a car (the salesmen kept saying he'd have to clear the deal through the "back office")...he was lying...but anyway... No, in terms of websites/apps, I've never heard that term used. If I encountered that term on a site I would assume that the copywriter wasn't from the US.