A mobile universal device operator (MUDO) operates at least one device and includes a seamless interaction manager and an appliance manager. The seamless interaction manager transmits a resource discovery requests to a gateway over a local network and to a cloud server over an external network. The gateway stores a local resource directory listing at least one resource of each device and the cloud server stores an associated cloud resource directory. The manager receives responses from the resource directories, selects a local command path or a cloud command path and associates the selected command path with each discovered resource. The appliance manager transfers instructions received from a user about a selected resource to the seamless interaction manager. The interaction manager translates the instructions into a unified command to the selected discovered resource via its associated command path.