The Arduino team gives a few examples of what you can build using the MKR IoT Carrier Rev2 board : – Environment monitoring stations.

After an introduction that includes a crash course in C programming basics, users get training in how to connect Arduino boards with ESP32 for full web connectivity.

Acer’s Arduino-based Cloud Professor wants to get kids into the IoT Educational dev kit tries taking sting out of programming cloud-connected devices.

The magic lies in Arduino's Modulino nodes, which consist of various sensors and actuators that connect to the UNO R4 WiFi board. The Plug and Make Kit is a complete package to get started.