Amazon Dynamodb

Dynamodb Table is used to store the user account ID and the Secure Wi-Fi Board Thing ID. When Alexa send directives to Lambda function , Lambda function scan this table to control the correspond Thing Shadow.

Steps:

1. Go to Amazon Cognito Console in AWS cloud https://console.aws.amazon.com/dynamodb
2. Click on "Create Table"
3. Create Table with the name "SensorBoardAcctTable", and primary key is "thingID" (String)