Please mainframes are not old, most of the mainframe machines used by all top 50 banks are latest. Programs running in mainframes may be old as they are backwar

Please mainframes are not old, most of the mainframe machines used by all top 50 banks are latest. Programs running in mainframes may be old as they are backward compatible. Policy is don't change it unless it breaks. So devs in mainframe get to work on new projects or optimise existing code. Front-end(offhost) Keeps changing regularly....