Implement an email and slack notification service with AWS CloudFormation

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Adding on top of https://awstip.com/implement-notification-service-using-amazon-ses-and-aws-cloudformation-b4e30c160378, let’s expand it to support slack notifications as well.

If you have followed the tutorial, we created a notification service that utilizes several AWS technologies(CloudFormation, AWS Lambda, etc) to create a notification service.

To add on top of that, we will include additional features in the following:

• slack notification: ability to send notifications to a slack channel
• api key: securing api requests with required api keys
• Environment Variables: storing slack webhook url in AWS System Manager Store so information is securely stored

Here is the modified notification-service.yaml:

AWSTemplateFormatVersion: '2010-09-09'
Description: Notification Service Infrastructure with Slack Notifications

Resources:
  # DynamoDB Table for Notification Logs
  NotificationLogsTable:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: NotificationLogs
      AttributeDefinitions:
        - AttributeName: notificationId
          AttributeType: S
      KeySchema:
        - AttributeName: notificationId
          KeyType: HASH
      BillingMode…