Memfault is a device observability platform that complements on-device debugging. It collects crash coredumps, reboot events, stack/heap metrics, and logs from deployed devices so you can diagnose issues without physical access, especially useful for sporadic faults or problems that only appear on real networks.
The nRF91M1 PPP Host Application forwards Memfault data through the existing nRF Cloud CoAP connection (same DTLS session and JWT as cloud messaging). No separate Memfault credentials or HTTP upload path is required.