One wonders why the application "used for everything related to authentication with government services" runs on a Private Sector cloud.

I mean, it's not as if a Digital Cloud is any more than a bunch of servers running somewhere with a direct connection to the Internet.

Then again, this is The Netherlands, which is has been ruled by a very Neoliberal right-wing party (in various coalitions) for over a decade so it makes sense that the government there would have even essential software for interacting with Public Services be operated by the Private Sector.