I simply execute

REPLACE(@text,"the cloud","timeshared mainframes")

when I hear people talking about the benefits of timeshared mainframes.

Quite seriously, does anyone still know of any really good references from the 60's and 70's about how to best use timeshared mainframes at a business/overall IT strategy level? I suspect much of those selection methodologies are just as good today as it was then, once costs have been updated.

Most of the rest of the items are identical, but more difficult, on timeshared mainframes than your own machines. Security? Test it. Backups? Restore them and use the restore! High Availability - cause an outage and test it. Etc. Etc.