What amazes me is that so many big companies still use windows in critical core infrastructure.
Windows endpoints is one thing, but anyone using windows servers and MSSQL for mission critical application stacks need to be hit with the modernization hammer.
And then on top of that, they do not have a test rollout of any changes in a test environment, before rolling it out in the production stack.
Good luck to all the engineers in the trenches, having to fix the mistakes of their leadership.