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Optimizations for device use and server communication

Device Management Connect and Device Management Client are designed for constrained devices, and therefore support methods that get the most out of the device's resources and battery life:

LwM2M also offers a presubscription feature to help you reduce traffic between your application and the LwM2M server.

By default, the client also supports TLS resume. This significantly decreases the number of bytes (and saves power) needed on re-connections as a full TLS handshake takes 8.6 kilobytes, while TLS resume only takes 853 bytes.