AWS Lambda function posts billing updates to your Slack channel. Built for Python3.6
Create a Slack API application with an incoming webhook.
Trigger the function with a CloudWatch event set to your desired interval. For example, you could set the schedule to "rate(7 days)" to get a billing update in Slack once per week.
Give the Lambda function read-only access to your billing info.
This repo was forked from richstokes/AWS-budget-to-slack.
Since upstream didn't have a license, I choose to add the MIT license.