has some big iron somewhere playing its part.
A lot is moving to cloud. big iron (mainframe) is not increasing, but not decreasing; it appears steady business for the likes of IBM's Z hardware is in replacement. https://www.ibm.com/z
Of course most mainframes run applications, and people interact with applications, so an end user wouldn't ever know if a web application was powered by a mainframe or a distributed containerised system on Linux in various cloud data centres. Generally its irrelevant to the end user.
I saw this as information for the end user, otherwise why include mobile operating systems?
25 years of broadband connectivity since Sep 1999 trial - Live BQM



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