A system includes a server to assign a namespace to Internet of Things (IoT) devices, with the IoT devices being at different locations, and with each IoT device having a universal unique identifier (UUID) associated therewith. The server assigns at least one sub-namespace to each IoT device based on its location, and maps the UUID associated with each IoT device to both the namespace and the at least one sub-namespace assigned thereto. A device cooperates with the server to generate commands for controlling the IoT devices based on the namespaces and the at least one sub-namespaces mapped to the respective UUIDs.