I'll give you one: this won't work in China. I'm in the process of migrating a few GAE services to AppScale on AWS (Beijing) to set up a separate backend for t

I'll give you one: this won't work in China. I'm in the process of migrating a few GAE services to AppScale on AWS (Beijing) to set up a separate backend for the China-localized version of a mobile app. AppScale supports a lot of App Engine functionality, but not other Google services. No Firebase or GCM for me.