Twitter just lost one of their crown jewels; Fabric is probably the biggest mobile analytics platform out there.
Twitter clearly decided that dev tools were a non-core part of their business. Meanwhile Google has been investing more heavily in becoming a platform company to compete with AWS, and also increasing their investment in mobile through Firebase.
Google has been building a competitor to fabric crash reporting. 6 months ago it was an MVP, but the version unveiled recently is pretty close to fabric.
I am not sure what they are buying here, it seems that google could sherlock everything that fabric does, especially since fabric is not that great in my experience.
Maybe it just illustrates that I am missing some info on why Google would get in such a buyout