Is it possible to connect to web services like Azure IOT Hub with WinCC OA?
Azure IOT Hub has an MQTT interface.
It should be able to connect the Azure IOT Hub using a MQTT driver.
It is planned to make such a driver available for future versions of WinCC OA.
Azure IOT Hub provides a web interface which you can connect to by using the existing WinCC OA commands (net*), e.g. netGet() and parsing the answer inside a CTRL script.
Please refer to the WinCC OA documentation to find a detailed description for the functions: CONTROL --> Control functions --> Functions N --> net*.