In the Arduino IoT Cloud tutorial, I have explained how to set up FREE Arduino IoT Cloud account to connect ESP8266 or ESP32 in details.
Make Arduino IoT Cloud ESP8266 NodeMCU Alexa Home Automation system using all FREE tools. Explained this IoT Project with CIrcuit & Code.
This article has explained how to connect Amazon Alexa to your Arduino IoT Cloud projects with no additional coding required.
Arduino home automation system explained with the Circuit, Source Code. Control relays from Blynk DHT11 sensor IR remote using Arduino ESP8266