I wrote a blog post on our implementation of cloud sync and migration to Google Cloud / Firebase. https://getpolarized.io/2019/01/03/building-cloud-sync-on-goo

I wrote a blog post on our implementation of cloud sync and migration to Google Cloud / Firebase. https://getpolarized.io/2019/01/03/building-cloud-sync-on-google-firebase.html https://getpolarized.io/2019/01/03/building-cloud-sync-on-go... I like the google storage API the most honestly. Firebase is really nice but the storage API is very polished and basically does exactly what you need it to do without the complexity of S3.