Uber has a really liberal definition of a micro service. Every web UI or dashboard is a service (of which there are many hundreds). Every application anyone builds across their many thousands of engineers is a service. It's rare, I think, for services to have fewer then a few thousand lines of code. In my experience, most companies would have a monolith that serves multiple UIs from the same service. Uber instead ships that monolith as a library which is a framework for building individual UIs. It has its pros and cons but I quite liked how they did it.