You might want to consider the cost of not upgrading legacy tech, UK's Department for Work and Pensions told

Processes relying on 1980s ICL mainframe contributed to £1bn pension black hole
Brit MPs have told the Department for Work and Pensions (DWP) it should factor in the cost of not upgrading a 34-year-old legacy system when reviewing tech investments after it contributed to a £1bn pension shortfall.…