Does anyone know what the route cause is of all the recent IT issues? Has it ever been made public?

I’m asking because I am really curious. It always seems to affect BA and no other IAG airlines.

Surely a business of the scale of BA would have backup systems which can be seamlessly switched to that are hosted elsewhere and 100% redundant. Also surely BA have network monitoring and an incident response team who can respond to issues quickly ?

The past 2 years seem like the ideal time to have invested in and tested all the necessary IT upgrades ready for the long anticipated surge in travel.

All these 261 payouts and other disruption, along with reputation damage must vastly outweigh investment in IT?