<Tr> <Th> Status </Th> <Td> Active </Td> </Tr> <Tr> <Th> License </Th> <Td> Proprietary </Td> </Tr> <P> Google Cloud Messaging (commonly referred to as GCM) is a mobile notification service developed by Google that enables third - party application developers to send notification data or information from developer - run servers to applications that target the Google Android Operating System, as well as applications or extensions developed for the Google Chrome internet browser . It is available to developers free of charge . The GCM Service was first announced in June 2012 as a successor to Google's now - defunct Android Cloud to Device Messaging (C2DM) service, citing improvements to authentication and delivery, new API endpoints and messaging parameters, and the removal of limitations on API send - rates and message sizes . It has been superseded by Google's Firebase Cloud Messaging (FCM). </P> <Table> <Tr> <Td> </Td> <Td> This section needs expansion . You can help by adding to it . (September 2014) </Td> </Tr> </Table>

What is the use of gcm in android