Read our full article on the directprint.io full print stack.
Chrome OS contains CUPS, a print stack, we don’t think this is enough for most Enterprise and Education customers.
You need accountability, policies, advanced features such as secure print release and most of all scalability. None of these are currently provided by the Chrome OS CUPS implementation (correct as at Apr 2019).
directprint.io has developed unique features: For example print-storm back-off, which allows a classroom full of students to print to a printer at the same time without causing print failures. Clever.