Method for connecting a field device (FG) of automation technology to a first cloud-based service platform (SP1), comprising: - Establishing a communication connection between a first operating device (BG1) and the field device (FG); - Reading out a first ticket (Tl1) from the field device (FG) by means of the first operating device (BG1) via the established communication link between the first operating device (BG1) and the field device (FG), wherein the first ticket (TI1) comprises as content at least one piece of information that uniquely identifies the field device (FG); characterized in that the method comprises the following steps: - Establishing a communication connection between a first operating device (BG1) and a second cloud-based service platform (SP2), wherein the second service platform (SP2) has a second ticket (TI2), wherein the second ticket (TI2) has as content at least customer data and connection information (VI) relating to the first cloud-based service platform (SP1); - Transmitting the first ticket (TI1) to the second cloud-based service platform (SP2) from the first operating device (BG1) via the established communication link between the first operating device (BG1) and the second cloud-based service platform (SP2); - Mutual assignment of the first ticket (TI1) and the second ticket (TI2) based on the respective contents and verification of the first ticket (TI1) and the second ticket (TI2); - in the case of successful verification, transmitting the connection information (VI) relating to the first cloud-based service platform (SP1) from the second cloud-based service platform (SP2) to the first user device (BG1) via the established communication link between the first user device (BG1) and the second cloud-based service platform (SP2); and - Establishing a communication connection between the first operating device (BG1) and the first cloud-based service platform (SP1) based on the connection information (VI) transmitted by the second service platform (SP2). - Establishing a communication connection between a first operating device (BG1) and the field device (FG); - Reading out a first ticket (Tl1) from the field device (FG) by means of the first operating device (BG1) via the established communication link between the first operating device (BG1) and the field device (FG), wherein the first ticket (TI1) comprises as content at least one piece of information that uniquely identifies the field device (FG); - Establishing a communication connection between a first operating device (BG1) and a second cloud-based service platform (SP2), wherein the second service platform (SP2) has a second ticket (TI2), wherein the second ticket (TI2) has as content at least customer data and connection information (VI) relating to the first cloud-based service platform (SP1); - Transmitting the first ticket (TI1) to the second cloud-based service platform (SP2) from the first operating device (BG1) via the established communication link between the first operating device (BG1) and the second cloud-based service platform (SP2); - Mutual assignment of the first ticket (TI1) and the second ticket (TI2) based on the respective contents and verification of the first ticket (TI1) and the second ticket (TI2); - in the case of successful verification, transmitting the connection information (VI) relating to the first cloud-based service platform (SP1) from the second cloud-based service platform (SP2) to the first user device (BG1) via the established communication link between the first user device (BG1) and the second cloud-based service platform (SP2); and - Establishing a communication connection between the first operating device (BG1) and the first cloud-based service platform (SP1) based on the connection information (VI) transmitted by the second service platform (SP2). <EOS>