Google's Public Cloud is built on the same 'Planet Scale' infrastructure that their private cloud is set upon. That makes it almost impossible to imagine the scale potential on a global infrastructure that we now have access to.

GCP also has their own dark fiber network links globally connecting their infrastructure. So if you go between regions you never leave their encrypted data links, never travel over the 'dirty internet'. GCP's API has come a long way and is now incredibly easy to use. Major partners are now supporting their infrastructure on the Google Cloud Platform just like AWS.

AWS would have worked for us, but we've tried both and decided to go in favor of GCE.