ESP RainMaker is the cloud platform developed by ESPRESSIF Systems for ESPRESSIF Chipset only. It has a lot of features as compared to commonly used IOT Platform for ABSOLUTELY FREE
Important Link
You need to add ESP32 board Packages version 2.0 to add support for ESP RainMaker for your ESP32 board. Here is the link that you need to paste inside your Arduino Preferences
Link - https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
For this project, I have used DHT11 sensor and Relay module with ESP32 board and made a demo code out of it. Here are the connections of all the components
You can watch out it's detailed explanatory video on our YouTube channel to understand about ESP RainMaker in simpler way. https://youtu.be/651EoGQHWck