I try to describe my issue with an example.
Just imagine, that I manufacture some device and every device has its own ID and optionally some password. Alice as customer bought my device and established it. And Alice wants to control this device and monitor the state of it. She wants to go to a website, enter the ID and password of the device and get access to it.
I understand the architecture and what I need to provide this functionality. But it's a lot of work. Is there at present any solution that I can use and don't write any code for backend and frontend? I know about such platforms as AWS IoT, but as far as I know it provides messaging platform, but not UI. Seems ThingsBoard.io makes that, but I don't see there possibility to automatically add devices (I need to add every user and device manually in ThingsBoard, if I correctly understood).