I’m not certain about the billing, I’ll have to get back to you. Let me speak with my employer tomorrow about what I’m allowed to share. I have quite a bit of work already under my belt regarding Google Cloud + mangOH so hopefully I can lead you in the right direction. I also have some code in the works to use the the mangOH/paho MQTT client implemented by @dfrey with Google MQTT, but I’m not certain if/when I’ll get a chance to finish it.
I spoke to my boss and we need to keep this somewhat proprietary, so for now I can only provide what is already open. In essence, you can connect AirVantage to Google Cloud Functions. Google Cloud Functions allows you specify a handler function each time an “event” occurs on AirVantage.
In terms of going directly to Google Cloud IoT (using MQTT), you would be responsible for implementing this. As mentioned above, the mangOH has an MQTT client more or less ready to go, but integrating it with Google Cloud would be up to you (things like authentication, session management).