In order to provide you with a better suggestion about which APIs to use or alternative solutions we would like that you share some information about your project.
You can implement your own backend if you decide to go with Gen2 devices. Please see this project that we have provided as a blueprint - https://github.com/ALLTERCO/fleet-management
Our APIs are stable, and in daily use. Nevertheless they are still in beta phase.
Only customers with a relevant use case can be provided the service and best effort support.
Access to our APIs is currently free of charge