When we worked there on contract the level of scale was somewhat unreal, and that was back office. Unfortunately the challenges of actually fixing things was as difficult as the problems were.

100%. The scale is nuts. The team I’m working with has 25k+ databases (not counting DR). There are so many interesting challenges with this including the most basic of how do you even start when the scale of the problems is so vast. But I’m loving it even though it’s completely overwhelming at times