Firebase Cloud Messaging
Firebase Cloud Messaging (FCM), formerly known as Google Cloud Messaging (GCM), is a cross-platform cloud solution for messages and notifications for Android, iOS, and web applications, which currently can be used at no cost.
The service is provided by Firebase, a subsidiary of Google. On October 21, 2014, Firebase announced it had been acquired by Google for an undisclosed amount. The official Google Cloud Messaging website points to Firebase Cloud Messaging (FCM) as the new version of GCM.
- Firebase Cloud Messaging - official website
- Google Cloud Messaging - official website
- GCM and FCM Frequently Asked Questions
- How to Configure a Firebase/Google Cloud Messaging Key & Why You Should Use FCM Key
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