The Internet of things (IoT) is the latest trend in the market, where lots of smart gadgets at home and in the office can be controlled through Alexa. But how do they work ? So, it is Alexa with Lambda that controls these smart devices. Say we have to light an LED bulb that is controlled by Alexa through a voice message, the event is triggered on the Alexa, and the Lambda function is invoked to perform the action to switch on or switch off the light. So, serverless could become the backend for all the IoT calls.