Yes, but I’m pretty sure that Google users their own proprietary model and their own servers. So they took RCS and built on it. Not to mention that Google Messages is a Google product…till they kill it or rebrand it, like they did with Google Allo. From Google’s FAQ page on RCS (everything mentions “Google’s backend”):
How RCS chats work?
When you use RCS chats by Google, messages are sent and received through Google’s RCS backend over the internet. Messages can either be delivered to or received from users on other RCS service providers. If RCS chats are provided by Google, but your recipient’s RCS service is with another provider, your messages are routed through Google’s RCS backend and then routed to your recipient’s RCS backend.
RCS is not a Google product but the official SMS successor.
Yes, but I’m pretty sure that Google users their own proprietary model and their own servers. So they took RCS and built on it. Not to mention that Google Messages is a Google product…till they kill it or rebrand it, like they did with Google Allo. From Google’s FAQ page on RCS (everything mentions “Google’s backend”):
How RCS chats work? When you use RCS chats by Google, messages are sent and received through Google’s RCS backend over the internet. Messages can either be delivered to or received from users on other RCS service providers. If RCS chats are provided by Google, but your recipient’s RCS service is with another provider, your messages are routed through Google’s RCS backend and then routed to your recipient’s RCS backend.