Starting from the bottom — with individual frontline devices containing IoT SIM cards on-board — and working upwards to the networks over which your Data is transmitted, and the IT applications that let you manage and control your entire fleet of IoT SIM cards ... Factor in that it also allows layers closer to the top of the solution to pass instructions and software updates to the IoT SIM cards in your front-line devices, and that role only becomes more important ... Without the device management layer, an IoT solution would do nothing but generate a stream of meaningless Numbers and values.