Google released the smart mobile communication application Allo in 2016. For its users, the bad news is that Google has stopped developing Allo, which puts most of the resources into the SMS's additional version RCS (Rich Communication Services).
The VergeReportedAllo was not killed at the moment, but was shelved. Allo team transferred to another message application Android Messages. Human Google is quietly working with the main mobile operators to use RCS standards. RCS allows free chat between users of different operators and can be integrated into chat applications. Android Messages has integrated RCS.