I couldn't find a category specifically for cloud questions.
I thought I'd try Arduino's cloud on this wet day but none of the boards that I own are compatible. The Arduino Nano 33 IoT is the cheapest. Is it a good choice? I don't have a project in mind, I might start with controlling a LED with a cloud switch or sending the temperature to the cloud.
I haven't tried anything yet because none of my boards are compatible with the cloud.
I've search the forum for anything to do with the cloud and the Nano 33 IoT and I noticed that some are having problems. I'll check the links that you provided.