This is an Internet Button reference project: when a button on the device is pressed, a cloud backend gets a notification and performs an action. In this particular case, AWS Lambda function sends an email to the specific email address. But, again, the action could be anything. Description: Send email on a button press Difficulty: Easy Video duration: 3 min 44 sec Hardware: ESP8266 NodeMCU Software: Mongoose OS <a href="https://mongoose-os.com" target="_blank">https://mongoose-os.com</a> AWS services: AWS IoT, AWS Lambda, AWS SNS, AWS CloudFormation Prerequisites Hardware: ESP8266 NodeMCU Amazon AWS account Amazon&apos;s AWS management utility (see <a href="https://aws.amazon.com/cli" target="_blank">https://aws.amazon.com/cli</a>) Step by step instructions: <a href="https://mongoose-os.com/aws-internet-button.html" target="_blank">https://mongoose-os.com/aws-internet-button.html</a>