One of the key benefits of having a service such as SNS is that it can also be used as a trigger mechanism for a variety of use cases. Messages sent by SNS can be used to trigger simple Lambda functions that in turn perform some action over another AWS service, or simply process the message from SNS and forward its contents to another application. In this section, we will be exploring a really simple use case where an SNS topic is used as a trigger mechanism for a Lambda function to push CloudWatch alerts over to Slack! The alerts will be sent out to a custom-made Slack channel that your IT team can use to track alerts and other important notifications with regards to your AWS environment.
At a broader level, ...
