`random_id` resource generates random numbers - useful for creating temporary infrastructure that requires unique id so it could be easily referenced by id. ```terraform resource "random_id" "server" { keepers = { # Generate a new id each time we switch to a new AMI id ami_id = var.ami_id } byte_length = 8 } ``` `keepers` - map of values that will trigger recreation of resources when changed. ### Reference - [random_id in Terraform Docs](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/id)