1. A cloud-connector device comprising: an integrated circuit or a set of integrated circuits that include one or more processing units, one or more communications modules, and one or more electronic memories; a first communications interface that is publicly documented and through which data, control commands, and status are exchanged between the cloud-connector device and a microprocessor-controlled or micro-controller-controlled electronic device in which the cloud-connector device is embedded; data values stored in one or more of the electronic memories, including a current-state value, device identifier, cloud-provider identifier, and wireless carrier identifier/address; and a second, wireless communications interface that allows the e cloud-connector device to connect to, and exchange data with, a wireless carrier that bills a cloud provider identified by the cloud-provider identifier for data transmitted through the second, wireless communications interface between the cloud-connector device and the cloud provider.