Author: Ada Palmer
See in goodreads
This book is sooooooooooo good.
At first it was hard to follow, too many characters, too many things happening, the world too strange. About half through the book it all clicked and it became absurdly enjoyable. I am literally in pain because the second part of the duology is not available yet.
Also, the idea of worldbuilding so that the most important enterprise for humankind is sort of a free Uber is hilarious.