FWIW, Amadeus has been working for years and years on a migration away from IBM mainframes. The project took hundreds of man-years and it's nearing completion very soon (I mean, maybe this or next year, that's "very soon" in the GDS scale).
But as you can imagine, migrating legacy systems to new hardware with the spec "it should work as the old system" is not the most sexy job and not the easiest to recruit great programmers for.
(I work for Amadeus, but on unrelated projects - though I have friends who worked on the migration).
But as you can imagine, migrating legacy systems to new hardware with the spec "it should work as the old system" is not the most sexy job and not the easiest to recruit great programmers for.
(I work for Amadeus, but on unrelated projects - though I have friends who worked on the migration).
You can read more here for example: https://www.nextplatform.com/2015/08/04/amadeus-takes-off-wi...