Using:
- Google Cloud Datastore - Horizontally Scalable NoSQL Document Database
- Google Cloud Pub/Sub - Provides reliable, many-to-many, asynchronous messaging between applications.
- Google Cloud Storage JSON - Lets you store and retrieve potentially-large, immutable data objects.
- Google Cloud Stackdriver Logging - Writes log entries and manages your Stackdriver Logging config.
- Google+ API - The Google+ API enables developers to build on top of the Google+ platform.