A five minute outage of the point-of-sale system during the lunch rush can easily cost even the smallest of restaurants several hundred dollars. True, most web

A five minute outage of the point-of-sale system during the lunch rush can easily cost even the smallest of restaurants several hundred dollars. True, most websites do not have this problem, because most websites do not drive revenue like that. There are plenty of use cases where you need five nines, but only within limited not-24/7 time windows.