this was developed in Sep 2018
Alexa with EchoDot

There are 4 Steps:
1- build backend script to handle lambda requests.
2- build lambda function to be triggered by Alexa.
3- build the Skill.
4- add it to your Alexa business private skills.

1-  python bottle script listener.
example: flask-app-listener.py attached bellow

2- Nodejs triggers the backend script
example: lamdba-trigger-function

3- from https://developer.amazon.com/alexa/console
build the skill and give it access to use lambda function then attach the ARN for lambda with Alexa endpoints.

4- from https://console.aws.amazon.com/a4b
add it by skill id.