Terraform
Terraform is a configuration language for managing resources using code.
3 articles
Adding a README to S3 buckets with Terraform
If you create an S3 bucket in Terraform, you can also create a README to help a future sysadmin understand what the bucket is for.
Tag your infrastructure-as-code resources with a link to their definitions
Applying a default tag that points to the IaC definition makes it easy to go from the console to the code.
Using templates in Terraform to document a deployment
Terraform can fill in placeholders with exact values from your deployment, for easy copy/paste instructions.