When added to a cellular plan, unlimited data allows the user to use as much data as they'd like. However, many service providers "throttle" data after a certain threshold, which reduces the speed.
Unified Endpoint Management (UEM)
A set of software tools that provide a single interface for the management, monitoring, and security of all corporate devices on a network. It is a Mobile Device Management solution that also works on Mac, PC, Servers, and sometimes even routers.