Prerequisites for using the Snapshot Manager template
Ensure that you configure the following before you launch a Snapshot Manager CloudFormation stack:
Set up AWS SNS notifications by creating an SNS topic for the Snapshot Manager stack. This allows you to receive notification emails each time the Auto Scaling Group (ASG) is updated. The SNS topic must be configured in the same AWS region where the Snapshot Manager instance is being deployed.
Create a key pair in the region where you want to launch the Snapshot Manager stack.
If desired, set up a AWS customer master key (CMK) if you want to use AWS KMS with Snapshot Manager. This is not a mandatory requirement.
Create an AWS IAM role and assign permissions that are required by Snapshot Manager.
See Configuring AWS permissions for Snapshot Manager.
Snapshot Manager requires that you use AWS IAM for authenticating Snapshot Manager operations on the assets in the AWS cloud.
Refer to the AWS documentation for more information on IAM roles.