IOT Arduino

I don’t see Arduino uno WiFi rev2 listed

Are you asking whether Uno WiFi Rev2 is one of the supported boards for Arduino IoT Cloud? If so, the answer is no.

When you say "WiFi", you really want to look at the ESP8266 - such as a WeMOS D1 Mini - instead. :grinning:

If you're using Arduino IoT Cloud, you should be aware that ESP8266 support is not available when using the Free plan. It's only available with the Maker plan:

and only one ESP8266 board is allowed.

There are less restrictions when using the official Arduino boards (Nano 33 IoT, MKR WiFi 1010, MKR1000 WiFi, MKR GSM 1400, MKR NB 1500).