I understand what microservices are, but I can't understand what 1700 pieces of unique functionality of Uber could be abstracted into their own services. I am s

I understand what microservices are, but I can't understand what 1700 pieces of unique functionality of Uber could be abstracted into their own services. I am struggling to even think of 100, so I was curious what exactly some of these things were, and how they structured things to need so many service dependencies.