Google Cloud Messaging and Firebase- Google Developers Blog
May 31, 2016

Summary
This post announces the evolution of Google Cloud Messaging (GCM) into Firebase Cloud Messaging (FCM), a unified platform for sending messages to Android, iOS, and web clients. It highlights the benefits of FCM, including a single API for all platforms, improved reliability, and enhanced features for message delivery and targeting. The post also details the migration path from GCM to FCM for existing applications.
More from the Push Messaging for Web Apps and Extensions trail
- Web Notifications API Support Now Available in FCM Send v1 API- Google Developers Blog
- Time to Upgrade from GCM to FCM- Google Developers Blog
- Google Cloud Messaging: State of the Union- Google Developers Blog
- Google Cloud Messaging - We've Come a Long Way- Google Developers Blog
- Google Calendar API Push notifications: don’t call us, we’ll call you- Google Developers Blog