I've been working through the recent independent report into a huge IT migration failure at TSB bank in the UK. The full report is here, and there's a lot to address, but a walk through the executive summary is revealing, almost jaw dropping at times.
tsb.co.uk/news-releases/… Important background: the bank was demerged from another UK bank post financial crisis, and acquired by a Spanish company, Sabadell. For a while they rented their spot on the old bank's platform. The acquiring bank's tech function, SABIS, handled the migration and a new platform.