I've spent my whole career in software. And though I hesitate to cast stones when I know very little about their internal working, some things are mystifying. They have apparently done amazing things on the database front, analyzing millions of uploads per day into segment and map format, each in a matter of seconds (or less), handling terabytes of historical data. Searches are almost always super quick. That's super cool stuff.

But then it takes them forever to do simple UI fixes. Most of those have been corrected recently, but it took years.