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In the third part, we are going to create a web-endpoint that will trigger remote execution in ESP32 by securely switching ON/OFF the ESP32 inbuilt led from a website hosted in the cloud. The following series split into four parts (refer below) with very simple and clear instructions to provision a home automation system to control house appliances through the web. We will create a Web Client application hosted either in AWS or IBM cloud, which subscribes to AWS MQTT broker. This tutorial mostly covers hands-on, prior knowledge of AWS IoT is an advantage.