Mender
6.3#3 in iot edge platformsFrom $34 a monthFree planWebLinux
VisitMender suits teams managing software updates across connected Linux-based devices, including fleets using Debian, Ubuntu, Raspberry Pi OS, Yocto Project, or Zephyr OS. It can serve organizations that want hosted or on-premise deployment and need device limits that scale from 50 to 250 devices on stated paid tiers.
You want what its maker publishes above — check its page for the details.