> I am asking does the mainframe really deliver better cost/performance than the cloud It is irrelevant because those companies don't care about cost/performan

> I am asking does the mainframe really deliver better cost/performance than the cloud It is irrelevant because those companies don't care about cost/performance. They care about risks e.g. operational, security, regulatory etc. And I would trust a mainframe over the cloud for those criteria any day of the week.