A cloud gateway device a) adapted for being communicatively connected to one or more IIoT devices to at least acquire industrial data therefrom and b) adapted for being communicatively connected to a cloud platform to send the collected industrial data to the cloud platform, wherein the cloud gateway device comprises: c1) a processing means, c2) a memory coupled to the processing means, c3) a transparency module and c4) an on-board display unit, c5) wherein the said transparency module is stored in the said memory in the form of machine-readable instructions and is executable by said processing means, c6) wherein the said transparency module is adapted for computing transparency information pertaining to the industrial data acquired from the IIoT devices and/or the cloud gateway device, c7) wherein the transparency module is adapted for computing the transparency information, by interfacing internally with an onboard analytics module and a data-acquisition module, said onboard analytics module being provided for pre-processing said industrial data collected by the data-acquisition module, based on at least one of the following - inbound traffic data from an IIoT device to the cloud gateway device, - outbound traffic data from the cloud gateway device to an IIoT device and/or - configuration data residing on the IIoT devices, and c8) wherein the said on-board display unit is adapted for displaying the computed transparency information pertaining to the acquired industrial data; d0) comprising an interface provided for transferring the said computed transparency information pertaining to the said industrial data to an external device or system; wherein d1) the transparency module is adapted to obtain a parallel stream of all the data collected by the cloud gateway device and all the data transferred to the cloud platform by the cloud gateway device upon receipt of respective data acquisition commands from the external device or system; wherein d2) the transparency module is adapted to inspect all control signals used by the cloud gateway device and inspect all write operations of the cloud gateway device on the IIoT devices before they are performed by the cloud gateway device upon receipt of a respective data acquisition command from the external device or system; wherein d3) data identified in a data acquisition command or a plurality of data acquisition commands and being made available through the transparency module is displayed by means of the onboard display unit. a) adapted for being communicatively connected to one or more IIoT devices to at least acquire industrial data therefrom and b) adapted for being communicatively connected to a cloud platform to send the collected industrial data to the cloud platform, c1) a processing means, c2) a memory coupled to the processing means, c3) a transparency module and c4) an on-board display unit, c5) wherein the said transparency module is stored in the said memory in the form of machine-readable instructions and is executable by said processing means, c6) wherein the said transparency module is adapted for computing transparency information pertaining to the industrial data acquired from the IIoT devices and/or the cloud gateway device, c7) wherein the transparency module is adapted for computing the transparency information, by interfacing internally with an onboard analytics module and a data-acquisition module, said onboard analytics module being provided for pre-processing said industrial data collected by the data-acquisition module, based on at least one of the following - inbound traffic data from an IIoT device to the cloud gateway device, - outbound traffic data from the cloud gateway device to an IIoT device and/or - configuration data residing on the IIoT devices, and - inbound traffic data from an IIoT device to the cloud gateway device, - outbound traffic data from the cloud gateway device to an IIoT device and/or - configuration data residing on the IIoT devices, and c8) wherein the said on-board display unit is adapted for displaying the computed transparency information pertaining to the acquired industrial data; d0) comprising an interface provided for transferring the said computed transparency information pertaining to the said industrial data to an external device or system; wherein d1) the transparency module is adapted to obtain a parallel stream of all the data collected by the cloud gateway device and all the data transferred to the cloud platform by the cloud gateway device upon receipt of respective data acquisition commands from the external device or system; wherein d2) the transparency module is adapted to inspect all control signals used by the cloud gateway device and inspect all write operations of the cloud gateway device on the IIoT devices before they are performed by the cloud gateway device upon receipt of a respective data acquisition command from the external device or system; wherein d3) data identified in a data acquisition command or a plurality of data acquisition commands and being made available through the transparency module is displayed by means of the onboard display unit.